21352256

素因数分解:

$2^6\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:247

約数の個数: 56

約数和(自身を含む): 44476416

約数和(自身を除く): 23124160

約数列:

[1, 2, 4, 8, 16, 32, 37, 64, 71, 74, 127, 142, 148, 254, 284, 296, 508, 568, 592, 1016, 1136, 1184, 2032, 2272, 2368, 2627, 4064, 4544, 4699, 5254, 8128, 9017, 9398, 10508, 18034, 18796, 21016, 36068, 37592, 42032, 72136, 75184, 84064, 144272, 150368, 168128, 288544, 300736, 333629, 577088, 667258, 1334516, 2669032, 5338064, 10676128, 21352256]

約数ペア:

[(1, 21352256), (2, 10676128), (4, 5338064), (8, 2669032), (16, 1334516), (32, 667258), (37, 577088), (64, 333629), (71, 300736), (74, 288544), (127, 168128), (142, 150368), (148, 144272), (254, 84064), (284, 75184), (296, 72136), (508, 42032), (568, 37592), (592, 36068), (1016, 21016), (1136, 18796), (1184, 18034), (2032, 10508), (2272, 9398), (2368, 9017), (2627, 8128), (4064, 5254), (4544, 4699)]