19968523520

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{4159}}^1$

素因数の和:4233

約数の個数: 216

約数和(自身を含む): 54283407360

約数和(自身を除く): 34314883840

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 44, 55, 62, 64, 80, 88, 110, 121, 124, 128, 155, 160, 176, 220, 242, 248, 256, 310, 320, 341, 352, 440, 484, 496, 605, 620, 640, 682, 704, 880, 968, 992, 1210, 1240, 1280, 1364, 1408, 1705, 1760, 1936, 1984, 2420, 2480, 2728, 2816, 3410, 3520, 3751, 3872, 3968, 4159, 4840, 4960, 5456, 6820, 7040, 7502, 7744, 7936, 8318, 9680, 9920, 10912, 13640, 14080, 15004, 15488, 16636, 18755, 19360, 19840, 20795, 21824, 27280, 30008, 30976, 33272, 37510, 38720, 39680, 41590, 43648, 45749, 54560, 60016, 66544, 75020, 77440, 83180, 87296, 91498, 109120, 120032, 128929, 133088, 150040, 154880, 166360, 182996, 218240, 228745, 240064, 257858, 266176, 300080, 332720, 365992, 436480, 457490, 480128, 503239, 515716, 532352, 600160, 644645, 665440, 731984, 914980, 960256, 1006478, 1031432, 1064704, 1200320, 1289290, 1330880, 1418219, 1463968, 1829960, 2012956, 2062864, 2400640, 2516195, 2578580, 2661760, 2836438, 2927936, 3659920, 4025912, 4125728, 4801280, 5032390, 5157160, 5323520, 5672876, 5855872, 7091095, 7319840, 8051824, 8251456, 10064780, 10314320, 11345752, 11711744, 14182190, 14639680, 15600409, 16103648, 16502912, 20129560, 20628640, 22691504, 28364380, 29279360, 31200818, 32207296, 33005824, 40259120, 41257280, 45383008, 56728760, 58558720, 62401636, 64414592, 78002045, 80518240, 82514560, 90766016, 113457520, 124803272, 128829184, 156004090, 161036480, 165029120, 181532032, 226915040, 249606544, 312008180, 322072960, 363064064, 453830080, 499213088, 624016360, 644145920, 907660160, 998426176, 1248032720, 1815320320, 1996852352, 2496065440, 3993704704, 4992130880, 9984261760, 19968523520]

約数ペア:

[(1, 19968523520), (2, 9984261760), (4, 4992130880), (5, 3993704704), (8, 2496065440), (10, 1996852352), (11, 1815320320), (16, 1248032720), (20, 998426176), (22, 907660160), (31, 644145920), (32, 624016360), (40, 499213088), (44, 453830080), (55, 363064064), (62, 322072960), (64, 312008180), (80, 249606544), (88, 226915040), (110, 181532032), (121, 165029120), (124, 161036480), (128, 156004090), (155, 128829184), (160, 124803272), (176, 113457520), (220, 90766016), (242, 82514560), (248, 80518240), (256, 78002045), (310, 64414592), (320, 62401636), (341, 58558720), (352, 56728760), (440, 45383008), (484, 41257280), (496, 40259120), (605, 33005824), (620, 32207296), (640, 31200818), (682, 29279360), (704, 28364380), (880, 22691504), (968, 20628640), (992, 20129560), (1210, 16502912), (1240, 16103648), (1280, 15600409), (1364, 14639680), (1408, 14182190), (1705, 11711744), (1760, 11345752), (1936, 10314320), (1984, 10064780), (2420, 8251456), (2480, 8051824), (2728, 7319840), (2816, 7091095), (3410, 5855872), (3520, 5672876), (3751, 5323520), (3872, 5157160), (3968, 5032390), (4159, 4801280), (4840, 4125728), (4960, 4025912), (5456, 3659920), (6820, 2927936), (7040, 2836438), (7502, 2661760), (7744, 2578580), (7936, 2516195), (8318, 2400640), (9680, 2062864), (9920, 2012956), (10912, 1829960), (13640, 1463968), (14080, 1418219), (15004, 1330880), (15488, 1289290), (16636, 1200320), (18755, 1064704), (19360, 1031432), (19840, 1006478), (20795, 960256), (21824, 914980), (27280, 731984), (30008, 665440), (30976, 644645), (33272, 600160), (37510, 532352), (38720, 515716), (39680, 503239), (41590, 480128), (43648, 457490), (45749, 436480), (54560, 365992), (60016, 332720), (66544, 300080), (75020, 266176), (77440, 257858), (83180, 240064), (87296, 228745), (91498, 218240), (109120, 182996), (120032, 166360), (128929, 154880), (133088, 150040)]