20701340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1289}}^1$

素因数の和:1382

約数の個数: 48

約数和(自身を含む): 48111840

約数和(自身を除く): 27410500

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 73, 110, 146, 220, 292, 365, 730, 803, 1289, 1460, 1606, 2578, 3212, 4015, 5156, 6445, 8030, 12890, 14179, 16060, 25780, 28358, 56716, 70895, 94097, 141790, 188194, 283580, 376388, 470485, 940970, 1035067, 1881940, 2070134, 4140268, 5175335, 10350670, 20701340]

約数ペア:

[(1, 20701340), (2, 10350670), (4, 5175335), (5, 4140268), (10, 2070134), (11, 1881940), (20, 1035067), (22, 940970), (44, 470485), (55, 376388), (73, 283580), (110, 188194), (146, 141790), (220, 94097), (292, 70895), (365, 56716), (730, 28358), (803, 25780), (1289, 16060), (1460, 14179), (1606, 12890), (2578, 8030), (3212, 6445), (4015, 5156)]