818740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:136

約数の個数: 48

約数和(自身を含む): 1919232

約数和(自身を除く): 1100492

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 67, 94, 130, 134, 188, 235, 260, 268, 335, 470, 611, 670, 871, 940, 1222, 1340, 1742, 2444, 3055, 3149, 3484, 4355, 6110, 6298, 8710, 12220, 12596, 15745, 17420, 31490, 40937, 62980, 81874, 163748, 204685, 409370, 818740]

約数ペア:

[(1, 818740), (2, 409370), (4, 204685), (5, 163748), (10, 81874), (13, 62980), (20, 40937), (26, 31490), (47, 17420), (52, 15745), (65, 12596), (67, 12220), (94, 8710), (130, 6298), (134, 6110), (188, 4355), (235, 3484), (260, 3149), (268, 3055), (335, 2444), (470, 1742), (611, 1340), (670, 1222), (871, 940)]