2149640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{881}}^1$

素因数の和:953

約数の個数: 32

約数和(自身を含む): 4921560

約数和(自身を除く): 2771920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 881, 1220, 1762, 2440, 3524, 4405, 7048, 8810, 17620, 35240, 53741, 107482, 214964, 268705, 429928, 537410, 1074820, 2149640]

約数ペア:

[(1, 2149640), (2, 1074820), (4, 537410), (5, 429928), (8, 268705), (10, 214964), (20, 107482), (40, 53741), (61, 35240), (122, 17620), (244, 8810), (305, 7048), (488, 4405), (610, 3524), (881, 2440), (1220, 1762)]