2021890720

素因数分解:

$2^5\times 5^1\times {\mathrm{101}}^1\times {\mathrm{125117}}^1$

素因数の和:125233

約数の個数: 48

約数和(自身を含む): 4824049608

約数和(自身を除く): 2802158888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 101, 160, 202, 404, 505, 808, 1010, 1616, 2020, 3232, 4040, 8080, 16160, 125117, 250234, 500468, 625585, 1000936, 1251170, 2001872, 2502340, 4003744, 5004680, 10009360, 12636817, 20018720, 25273634, 50547268, 63184085, 101094536, 126368170, 202189072, 252736340, 404378144, 505472680, 1010945360, 2021890720]

約数ペア:

[(1, 2021890720), (2, 1010945360), (4, 505472680), (5, 404378144), (8, 252736340), (10, 202189072), (16, 126368170), (20, 101094536), (32, 63184085), (40, 50547268), (80, 25273634), (101, 20018720), (160, 12636817), (202, 10009360), (404, 5004680), (505, 4003744), (808, 2502340), (1010, 2001872), (1616, 1251170), (2020, 1000936), (3232, 625585), (4040, 500468), (8080, 250234), (16160, 125117)]