28421780

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{26813}}^1$

素因数の和:26875

約数の個数: 24

約数和(自身を含む): 60814152

約数和(自身を除く): 32392372

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 26813, 53626, 107252, 134065, 268130, 536260, 1421089, 2842178, 5684356, 7105445, 14210890, 28421780]

約数ペア:

[(1, 28421780), (2, 14210890), (4, 7105445), (5, 5684356), (10, 2842178), (20, 1421089), (53, 536260), (106, 268130), (212, 134065), (265, 107252), (530, 53626), (1060, 26813)]