172405040

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{239}}^1$

素因数の和:450

約数の個数: 80

約数和(自身を含む): 411402240

約数和(自身を除く): 238997200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 127, 142, 239, 254, 284, 355, 478, 508, 568, 635, 710, 956, 1016, 1136, 1195, 1270, 1420, 1912, 2032, 2390, 2540, 2840, 3824, 4780, 5080, 5680, 9017, 9560, 10160, 16969, 18034, 19120, 30353, 33938, 36068, 45085, 60706, 67876, 72136, 84845, 90170, 121412, 135752, 144272, 151765, 169690, 180340, 242824, 271504, 303530, 339380, 360680, 485648, 607060, 678760, 721360, 1214120, 1357520, 2155063, 2428240, 4310126, 8620252, 10775315, 17240504, 21550630, 34481008, 43101260, 86202520, 172405040]

約数ペア:

[(1, 172405040), (2, 86202520), (4, 43101260), (5, 34481008), (8, 21550630), (10, 17240504), (16, 10775315), (20, 8620252), (40, 4310126), (71, 2428240), (80, 2155063), (127, 1357520), (142, 1214120), (239, 721360), (254, 678760), (284, 607060), (355, 485648), (478, 360680), (508, 339380), (568, 303530), (635, 271504), (710, 242824), (956, 180340), (1016, 169690), (1136, 151765), (1195, 144272), (1270, 135752), (1420, 121412), (1912, 90170), (2032, 84845), (2390, 72136), (2540, 67876), (2840, 60706), (3824, 45085), (4780, 36068), (5080, 33938), (5680, 30353), (9017, 19120), (9560, 18034), (10160, 16969)]