18271880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{317}}^1$

素因数の和:470

約数の個数: 64

約数和(自身を含む): 45334080

約数和(自身を除く): 27062200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 131, 220, 262, 317, 440, 524, 634, 655, 1048, 1268, 1310, 1441, 1585, 2536, 2620, 2882, 3170, 3487, 5240, 5764, 6340, 6974, 7205, 11528, 12680, 13948, 14410, 17435, 27896, 28820, 34870, 41527, 57640, 69740, 83054, 139480, 166108, 207635, 332216, 415270, 456797, 830540, 913594, 1661080, 1827188, 2283985, 3654376, 4567970, 9135940, 18271880]

約数ペア:

[(1, 18271880), (2, 9135940), (4, 4567970), (5, 3654376), (8, 2283985), (10, 1827188), (11, 1661080), (20, 913594), (22, 830540), (40, 456797), (44, 415270), (55, 332216), (88, 207635), (110, 166108), (131, 139480), (220, 83054), (262, 69740), (317, 57640), (440, 41527), (524, 34870), (634, 28820), (655, 27896), (1048, 17435), (1268, 14410), (1310, 13948), (1441, 12680), (1585, 11528), (2536, 7205), (2620, 6974), (2882, 6340), (3170, 5764), (3487, 5240)]