31381240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{977}}^1$

素因数の和:1072

約数の個数: 64

約数和(自身を含む): 78161760

約数和(自身を除く): 46780520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 73, 88, 110, 146, 220, 292, 365, 440, 584, 730, 803, 977, 1460, 1606, 1954, 2920, 3212, 3908, 4015, 4885, 6424, 7816, 8030, 9770, 10747, 16060, 19540, 21494, 32120, 39080, 42988, 53735, 71321, 85976, 107470, 142642, 214940, 285284, 356605, 429880, 570568, 713210, 784531, 1426420, 1569062, 2852840, 3138124, 3922655, 6276248, 7845310, 15690620, 31381240]

約数ペア:

[(1, 31381240), (2, 15690620), (4, 7845310), (5, 6276248), (8, 3922655), (10, 3138124), (11, 2852840), (20, 1569062), (22, 1426420), (40, 784531), (44, 713210), (55, 570568), (73, 429880), (88, 356605), (110, 285284), (146, 214940), (220, 142642), (292, 107470), (365, 85976), (440, 71321), (584, 53735), (730, 42988), (803, 39080), (977, 32120), (1460, 21494), (1606, 19540), (1954, 16060), (2920, 10747), (3212, 9770), (3908, 8030), (4015, 7816), (4885, 6424)]