81853240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{1213}}^1$

素因数の和:1472

約数の個数: 64

約数和(自身を含む): 211527360

約数和(自身を除く): 129674120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 241, 280, 482, 964, 1205, 1213, 1687, 1928, 2410, 2426, 3374, 4820, 4852, 6065, 6748, 8435, 8491, 9640, 9704, 12130, 13496, 16870, 16982, 24260, 33740, 33964, 42455, 48520, 67480, 67928, 84910, 169820, 292333, 339640, 584666, 1169332, 1461665, 2046331, 2338664, 2923330, 4092662, 5846660, 8185324, 10231655, 11693320, 16370648, 20463310, 40926620, 81853240]

約数ペア:

[(1, 81853240), (2, 40926620), (4, 20463310), (5, 16370648), (7, 11693320), (8, 10231655), (10, 8185324), (14, 5846660), (20, 4092662), (28, 2923330), (35, 2338664), (40, 2046331), (56, 1461665), (70, 1169332), (140, 584666), (241, 339640), (280, 292333), (482, 169820), (964, 84910), (1205, 67928), (1213, 67480), (1687, 48520), (1928, 42455), (2410, 33964), (2426, 33740), (3374, 24260), (4820, 16982), (4852, 16870), (6065, 13496), (6748, 12130), (8435, 9704), (8491, 9640)]