20337440

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7477}}^1$

素因数の和:7509

約数の個数: 48

約数和(自身を含む): 50880312

約数和(自身を除く): 30542872

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 7477, 14954, 29908, 37385, 59816, 74770, 119632, 127109, 149540, 239264, 254218, 299080, 508436, 598160, 635545, 1016872, 1196320, 1271090, 2033744, 2542180, 4067488, 5084360, 10168720, 20337440]

約数ペア:

[(1, 20337440), (2, 10168720), (4, 5084360), (5, 4067488), (8, 2542180), (10, 2033744), (16, 1271090), (17, 1196320), (20, 1016872), (32, 635545), (34, 598160), (40, 508436), (68, 299080), (80, 254218), (85, 239264), (136, 149540), (160, 127109), (170, 119632), (272, 74770), (340, 59816), (544, 37385), (680, 29908), (1360, 14954), (2720, 7477)]