21345909

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{449}}^1$

素因数の和:541

約数の個数: 32

約数和(自身を含む): 32659200

約数和(自身を除く): 11313291

約数列:

[1, 3, 13, 23, 39, 53, 69, 159, 299, 449, 689, 897, 1219, 1347, 2067, 3657, 5837, 10327, 15847, 17511, 23797, 30981, 47541, 71391, 134251, 309361, 402753, 547331, 928083, 1641993, 7115303, 21345909]

約数ペア:

[(1, 21345909), (3, 7115303), (13, 1641993), (23, 928083), (39, 547331), (53, 402753), (69, 309361), (159, 134251), (299, 71391), (449, 47541), (689, 30981), (897, 23797), (1219, 17511), (1347, 15847), (2067, 10327), (3657, 5837)]