20059240

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{8221}}^1$

素因数の和:8293

約数の個数: 32

約数和(自身を含む): 45878760

約数和(自身を除く): 25819520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 8221, 16442, 32884, 41105, 65768, 82210, 164420, 328840, 501481, 1002962, 2005924, 2507405, 4011848, 5014810, 10029620, 20059240]

約数ペア:

[(1, 20059240), (2, 10029620), (4, 5014810), (5, 4011848), (8, 2507405), (10, 2005924), (20, 1002962), (40, 501481), (61, 328840), (122, 164420), (244, 82210), (305, 65768), (488, 41105), (610, 32884), (1220, 16442), (2440, 8221)]