20176508720

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{280541}}^1$

素因数の和:280614

約数の個数: 80

約数和(自身を含む): 50093579520

約数和(自身を除く): 29917070800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 31, 40, 58, 62, 80, 116, 124, 145, 155, 232, 248, 290, 310, 464, 496, 580, 620, 899, 1160, 1240, 1798, 2320, 2480, 3596, 4495, 7192, 8990, 14384, 17980, 35960, 71920, 280541, 561082, 1122164, 1402705, 2244328, 2805410, 4488656, 5610820, 8135689, 8696771, 11221640, 16271378, 17393542, 22443280, 32542756, 34787084, 40678445, 43483855, 65085512, 69574168, 81356890, 86967710, 130171024, 139148336, 162713780, 173935420, 252206359, 325427560, 347870840, 504412718, 650855120, 695741680, 1008825436, 1261031795, 2017650872, 2522063590, 4035301744, 5044127180, 10088254360, 20176508720]

約数ペア:

[(1, 20176508720), (2, 10088254360), (4, 5044127180), (5, 4035301744), (8, 2522063590), (10, 2017650872), (16, 1261031795), (20, 1008825436), (29, 695741680), (31, 650855120), (40, 504412718), (58, 347870840), (62, 325427560), (80, 252206359), (116, 173935420), (124, 162713780), (145, 139148336), (155, 130171024), (232, 86967710), (248, 81356890), (290, 69574168), (310, 65085512), (464, 43483855), (496, 40678445), (580, 34787084), (620, 32542756), (899, 22443280), (1160, 17393542), (1240, 16271378), (1798, 11221640), (2320, 8696771), (2480, 8135689), (3596, 5610820), (4495, 4488656), (7192, 2805410), (8990, 2244328), (14384, 1402705), (17980, 1122164), (35960, 561082), (71920, 280541)]