813582620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{666871}}^1$

素因数の和:666941

約数の個数: 24

約数和(自身を含む): 1736534688

約数和(自身を除く): 922952068

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 666871, 1333742, 2667484, 3334355, 6668710, 13337420, 40679131, 81358262, 162716524, 203395655, 406791310, 813582620]

約数ペア:

[(1, 813582620), (2, 406791310), (4, 203395655), (5, 162716524), (10, 81358262), (20, 40679131), (61, 13337420), (122, 6668710), (244, 3334355), (305, 2667484), (610, 1333742), (1220, 666871)]