20121788440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{7019}}^1$

素因数の和:7229

約数の個数: 128

約数和(自身を含む): 50417640000

約数和(自身を除く): 30295851560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 37, 40, 52, 65, 74, 104, 130, 148, 149, 185, 260, 296, 298, 370, 481, 520, 596, 740, 745, 962, 1192, 1480, 1490, 1924, 1937, 2405, 2980, 3848, 3874, 4810, 5513, 5960, 7019, 7748, 9620, 9685, 11026, 14038, 15496, 19240, 19370, 22052, 27565, 28076, 35095, 38740, 44104, 55130, 56152, 70190, 71669, 77480, 91247, 110260, 140380, 143338, 182494, 220520, 259703, 280760, 286676, 358345, 364988, 456235, 519406, 573352, 716690, 729976, 912470, 1038812, 1045831, 1298515, 1433380, 1824940, 2077624, 2091662, 2597030, 2866760, 3376139, 3649880, 4183324, 5194060, 5229155, 6752278, 8366648, 10388120, 10458310, 13504556, 13595803, 16880695, 20916620, 27009112, 27191606, 33761390, 38695747, 41833240, 54383212, 67522780, 67979015, 77391494, 108766424, 135045560, 135958030, 154782988, 193478735, 271916060, 309565976, 386957470, 503044711, 543832120, 773914940, 1006089422, 1547829880, 2012178844, 2515223555, 4024357688, 5030447110, 10060894220, 20121788440]

約数ペア:

[(1, 20121788440), (2, 10060894220), (4, 5030447110), (5, 4024357688), (8, 2515223555), (10, 2012178844), (13, 1547829880), (20, 1006089422), (26, 773914940), (37, 543832120), (40, 503044711), (52, 386957470), (65, 309565976), (74, 271916060), (104, 193478735), (130, 154782988), (148, 135958030), (149, 135045560), (185, 108766424), (260, 77391494), (296, 67979015), (298, 67522780), (370, 54383212), (481, 41833240), (520, 38695747), (596, 33761390), (740, 27191606), (745, 27009112), (962, 20916620), (1192, 16880695), (1480, 13595803), (1490, 13504556), (1924, 10458310), (1937, 10388120), (2405, 8366648), (2980, 6752278), (3848, 5229155), (3874, 5194060), (4810, 4183324), (5513, 3649880), (5960, 3376139), (7019, 2866760), (7748, 2597030), (9620, 2091662), (9685, 2077624), (11026, 1824940), (14038, 1433380), (15496, 1298515), (19240, 1045831), (19370, 1038812), (22052, 912470), (27565, 729976), (28076, 716690), (35095, 573352), (38740, 519406), (44104, 456235), (55130, 364988), (56152, 358345), (70190, 286676), (71669, 280760), (77480, 259703), (91247, 220520), (110260, 182494), (140380, 143338)]