20175791120

素因数分解:

$2^4\times 5^1\times {\mathrm{1613}}^1\times {\mathrm{156353}}^1$

素因数の和:157979

約数の個数: 40

約数和(自身を含む): 46938096216

約数和(自身を除く): 26762305096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1613, 3226, 6452, 8065, 12904, 16130, 25808, 32260, 64520, 129040, 156353, 312706, 625412, 781765, 1250824, 1563530, 2501648, 3127060, 6254120, 12508240, 252197389, 504394778, 1008789556, 1260986945, 2017579112, 2521973890, 4035158224, 5043947780, 10087895560, 20175791120]

約数ペア:

[(1, 20175791120), (2, 10087895560), (4, 5043947780), (5, 4035158224), (8, 2521973890), (10, 2017579112), (16, 1260986945), (20, 1008789556), (40, 504394778), (80, 252197389), (1613, 12508240), (3226, 6254120), (6452, 3127060), (8065, 2501648), (12904, 1563530), (16130, 1250824), (25808, 781765), (32260, 625412), (64520, 312706), (129040, 156353)]