21513912

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1621}}^1$

素因数の和:1716

約数の個数: 64

約数和(自身を含む): 62284800

約数和(自身を除く): 40770888

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 79, 84, 158, 168, 237, 316, 474, 553, 632, 948, 1106, 1621, 1659, 1896, 2212, 3242, 3318, 4424, 4863, 6484, 6636, 9726, 11347, 12968, 13272, 19452, 22694, 34041, 38904, 45388, 68082, 90776, 128059, 136164, 256118, 272328, 384177, 512236, 768354, 896413, 1024472, 1536708, 1792826, 2689239, 3073416, 3585652, 5378478, 7171304, 10756956, 21513912]

約数ペア:

[(1, 21513912), (2, 10756956), (3, 7171304), (4, 5378478), (6, 3585652), (7, 3073416), (8, 2689239), (12, 1792826), (14, 1536708), (21, 1024472), (24, 896413), (28, 768354), (42, 512236), (56, 384177), (79, 272328), (84, 256118), (158, 136164), (168, 128059), (237, 90776), (316, 68082), (474, 45388), (553, 38904), (632, 34041), (948, 22694), (1106, 19452), (1621, 13272), (1659, 12968), (1896, 11347), (2212, 9726), (3242, 6636), (3318, 6484), (4424, 4863)]