20572120

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{379}}^1$

素因数の和:472

約数の個数: 64

約数和(自身を含む): 49248000

約数和(自身を除く): 28675880

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 59, 92, 115, 118, 184, 230, 236, 295, 379, 460, 472, 590, 758, 920, 1180, 1357, 1516, 1895, 2360, 2714, 3032, 3790, 5428, 6785, 7580, 8717, 10856, 13570, 15160, 17434, 22361, 27140, 34868, 43585, 44722, 54280, 69736, 87170, 89444, 111805, 174340, 178888, 223610, 348680, 447220, 514303, 894440, 1028606, 2057212, 2571515, 4114424, 5143030, 10286060, 20572120]

約数ペア:

[(1, 20572120), (2, 10286060), (4, 5143030), (5, 4114424), (8, 2571515), (10, 2057212), (20, 1028606), (23, 894440), (40, 514303), (46, 447220), (59, 348680), (92, 223610), (115, 178888), (118, 174340), (184, 111805), (230, 89444), (236, 87170), (295, 69736), (379, 54280), (460, 44722), (472, 43585), (590, 34868), (758, 27140), (920, 22361), (1180, 17434), (1357, 15160), (1516, 13570), (1895, 10856), (2360, 8717), (2714, 7580), (3032, 6785), (3790, 5428)]