19945401

素因数分解:

$3^1\times 7^2\times {\mathrm{241}}^1\times {\mathrm{563}}^1$

素因数の和:821

約数の個数: 24

約数和(自身を含む): 31119264

約数和(自身を除く): 11173863

約数列:

[1, 3, 7, 21, 49, 147, 241, 563, 723, 1687, 1689, 3941, 5061, 11809, 11823, 27587, 35427, 82761, 135683, 407049, 949781, 2849343, 6648467, 19945401]

約数ペア:

[(1, 19945401), (3, 6648467), (7, 2849343), (21, 949781), (49, 407049), (147, 135683), (241, 82761), (563, 35427), (723, 27587), (1687, 11823), (1689, 11809), (3941, 5061)]