20878190

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67349}}^1$

素因数の和:67387

約数の個数: 16

約数和(自身を含む): 38793600

約数和(自身を除く): 17915410

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 67349, 134698, 336745, 673490, 2087819, 4175638, 10439095, 20878190]

約数ペア:

[(1, 20878190), (2, 10439095), (5, 4175638), (10, 2087819), (31, 673490), (62, 336745), (155, 134698), (310, 67349)]