21210168

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{661}}^1$

素因数の和:868

約数の個数: 64

約数和(自身を含む): 61009920

約数和(自身を除く): 39799752

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 191, 382, 573, 661, 764, 1146, 1322, 1337, 1528, 1983, 2292, 2644, 2674, 3966, 4011, 4584, 4627, 5288, 5348, 7932, 8022, 9254, 10696, 13881, 15864, 16044, 18508, 27762, 32088, 37016, 55524, 111048, 126251, 252502, 378753, 505004, 757506, 883757, 1010008, 1515012, 1767514, 2651271, 3030024, 3535028, 5302542, 7070056, 10605084, 21210168]

約数ペア:

[(1, 21210168), (2, 10605084), (3, 7070056), (4, 5302542), (6, 3535028), (7, 3030024), (8, 2651271), (12, 1767514), (14, 1515012), (21, 1010008), (24, 883757), (28, 757506), (42, 505004), (56, 378753), (84, 252502), (168, 126251), (191, 111048), (382, 55524), (573, 37016), (661, 32088), (764, 27762), (1146, 18508), (1322, 16044), (1337, 15864), (1528, 13881), (1983, 10696), (2292, 9254), (2644, 8022), (2674, 7932), (3966, 5348), (4011, 5288), (4584, 4627)]