647660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:122

約数の個数: 48

約数和(自身を含む): 1524096

約数和(自身を除く): 876436

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 53, 65, 94, 106, 130, 188, 212, 235, 260, 265, 470, 530, 611, 689, 940, 1060, 1222, 1378, 2444, 2491, 2756, 3055, 3445, 4982, 6110, 6890, 9964, 12220, 12455, 13780, 24910, 32383, 49820, 64766, 129532, 161915, 323830, 647660]

約数ペア:

[(1, 647660), (2, 323830), (4, 161915), (5, 129532), (10, 64766), (13, 49820), (20, 32383), (26, 24910), (47, 13780), (52, 12455), (53, 12220), (65, 9964), (94, 6890), (106, 6110), (130, 4982), (188, 3445), (212, 3055), (235, 2756), (260, 2491), (265, 2444), (470, 1378), (530, 1222), (611, 1060), (689, 940)]