28710820

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{8807}}^1$

素因数の和:8979

約数の個数: 24

約数和(自身を含む): 60669504

約数和(自身を除く): 31958684

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 8807, 17614, 35228, 44035, 88070, 176140, 1435541, 2871082, 5742164, 7177705, 14355410, 28710820]

約数ペア:

[(1, 28710820), (2, 14355410), (4, 7177705), (5, 5742164), (10, 2871082), (20, 1435541), (163, 176140), (326, 88070), (652, 44035), (815, 35228), (1630, 17614), (3260, 8807)]