20078390

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1\times {\mathrm{271}}^1$

素因数の和:548

約数の個数: 32

約数和(自身を含む): 37601280

約数和(自身を除く): 17522890

約数列:

[1, 2, 5, 10, 31, 62, 155, 239, 271, 310, 478, 542, 1195, 1355, 2390, 2710, 7409, 8401, 14818, 16802, 37045, 42005, 64769, 74090, 84010, 129538, 323845, 647690, 2007839, 4015678, 10039195, 20078390]

約数ペア:

[(1, 20078390), (2, 10039195), (5, 4015678), (10, 2007839), (31, 647690), (62, 323845), (155, 129538), (239, 84010), (271, 74090), (310, 64769), (478, 42005), (542, 37045), (1195, 16802), (1355, 14818), (2390, 8401), (2710, 7409)]