199907840

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{229}}^1$

素因数の和:294

約数の個数: 160

約数和(自身を含む): 542108160

約数和(自身を除く): 342200320

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 44, 55, 62, 64, 80, 88, 110, 124, 128, 155, 160, 176, 220, 229, 248, 256, 310, 320, 341, 352, 440, 458, 496, 512, 620, 640, 682, 704, 880, 916, 992, 1145, 1240, 1280, 1364, 1408, 1705, 1760, 1832, 1984, 2290, 2480, 2519, 2560, 2728, 2816, 3410, 3520, 3664, 3968, 4580, 4960, 5038, 5456, 5632, 6820, 7040, 7099, 7328, 7936, 9160, 9920, 10076, 10912, 12595, 13640, 14080, 14198, 14656, 15872, 18320, 19840, 20152, 21824, 25190, 27280, 28160, 28396, 29312, 35495, 36640, 39680, 40304, 43648, 50380, 54560, 56792, 58624, 70990, 73280, 78089, 79360, 80608, 87296, 100760, 109120, 113584, 117248, 141980, 146560, 156178, 161216, 174592, 201520, 218240, 227168, 283960, 293120, 312356, 322432, 390445, 403040, 436480, 454336, 567920, 586240, 624712, 644864, 780890, 806080, 872960, 908672, 1135840, 1249424, 1289728, 1561780, 1612160, 1817344, 2271680, 2498848, 3123560, 3224320, 3634688, 4543360, 4997696, 6247120, 6448640, 9086720, 9995392, 12494240, 18173440, 19990784, 24988480, 39981568, 49976960, 99953920, 199907840]

約数ペア:

[(1, 199907840), (2, 99953920), (4, 49976960), (5, 39981568), (8, 24988480), (10, 19990784), (11, 18173440), (16, 12494240), (20, 9995392), (22, 9086720), (31, 6448640), (32, 6247120), (40, 4997696), (44, 4543360), (55, 3634688), (62, 3224320), (64, 3123560), (80, 2498848), (88, 2271680), (110, 1817344), (124, 1612160), (128, 1561780), (155, 1289728), (160, 1249424), (176, 1135840), (220, 908672), (229, 872960), (248, 806080), (256, 780890), (310, 644864), (320, 624712), (341, 586240), (352, 567920), (440, 454336), (458, 436480), (496, 403040), (512, 390445), (620, 322432), (640, 312356), (682, 293120), (704, 283960), (880, 227168), (916, 218240), (992, 201520), (1145, 174592), (1240, 161216), (1280, 156178), (1364, 146560), (1408, 141980), (1705, 117248), (1760, 113584), (1832, 109120), (1984, 100760), (2290, 87296), (2480, 80608), (2519, 79360), (2560, 78089), (2728, 73280), (2816, 70990), (3410, 58624), (3520, 56792), (3664, 54560), (3968, 50380), (4580, 43648), (4960, 40304), (5038, 39680), (5456, 36640), (5632, 35495), (6820, 29312), (7040, 28396), (7099, 28160), (7328, 27280), (7936, 25190), (9160, 21824), (9920, 20152), (10076, 19840), (10912, 18320), (12595, 15872), (13640, 14656), (14080, 14198)]