28979980

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{12823}}^1$

素因数の和:12945

約数の個数: 24

約数和(自身を含む): 61401312

約数和(自身を除く): 32421332

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 12823, 25646, 51292, 64115, 128230, 256460, 1448999, 2897998, 5795996, 7244995, 14489990, 28979980]

約数ペア:

[(1, 28979980), (2, 14489990), (4, 7244995), (5, 5795996), (10, 2897998), (20, 1448999), (113, 256460), (226, 128230), (452, 64115), (565, 51292), (1130, 25646), (2260, 12823)]