21047628

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{757}}^1$

素因数の和:1102

約数の個数: 48

約数和(自身を含む): 56370944

約数和(自身を除く): 35323316

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 331, 662, 757, 993, 1324, 1514, 1986, 2271, 2317, 3028, 3972, 4542, 4634, 5299, 6951, 9084, 9268, 10598, 13902, 15897, 21196, 27804, 31794, 63588, 250567, 501134, 751701, 1002268, 1503402, 1753969, 3006804, 3507938, 5261907, 7015876, 10523814, 21047628]

約数ペア:

[(1, 21047628), (2, 10523814), (3, 7015876), (4, 5261907), (6, 3507938), (7, 3006804), (12, 1753969), (14, 1503402), (21, 1002268), (28, 751701), (42, 501134), (84, 250567), (331, 63588), (662, 31794), (757, 27804), (993, 21196), (1324, 15897), (1514, 13902), (1986, 10598), (2271, 9268), (2317, 9084), (3028, 6951), (3972, 5299), (4542, 4634)]