20158792

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{409}}^1$

素因数の和:577

約数の個数: 32

約数和(自身を含む): 38892600

約数和(自身を除く): 18733808

約数列:

[1, 2, 4, 8, 61, 101, 122, 202, 244, 404, 409, 488, 808, 818, 1636, 3272, 6161, 12322, 24644, 24949, 41309, 49288, 49898, 82618, 99796, 165236, 199592, 330472, 2519849, 5039698, 10079396, 20158792]

約数ペア:

[(1, 20158792), (2, 10079396), (4, 5039698), (8, 2519849), (61, 330472), (101, 199592), (122, 165236), (202, 99796), (244, 82618), (404, 49898), (409, 49288), (488, 41309), (808, 24949), (818, 24644), (1636, 12322), (3272, 6161)]