21998498

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:242

約数の個数: 32

約数和(自身を含む): 35458560

約数和(自身を除く): 13460062

約数列:

[1, 2, 37, 53, 71, 74, 79, 106, 142, 158, 1961, 2627, 2923, 3763, 3922, 4187, 5254, 5609, 5846, 7526, 8374, 11218, 139231, 154919, 207533, 278462, 297277, 309838, 415066, 594554, 10999249, 21998498]

約数ペア:

[(1, 21998498), (2, 10999249), (37, 594554), (53, 415066), (71, 309838), (74, 297277), (79, 278462), (106, 207533), (142, 154919), (158, 139231), (1961, 11218), (2627, 8374), (2923, 7526), (3763, 5846), (3922, 5609), (4187, 5254)]