19991025

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{3863}}^1$

素因数の和:3902

約数の個数: 36

約数和(自身を含む): 37372608

約数和(自身を除く): 17381583

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 207, 225, 345, 575, 1035, 1725, 3863, 5175, 11589, 19315, 34767, 57945, 88849, 96575, 173835, 266547, 289725, 444245, 799641, 869175, 1332735, 2221225, 3998205, 6663675, 19991025]

約数ペア:

[(1, 19991025), (3, 6663675), (5, 3998205), (9, 2221225), (15, 1332735), (23, 869175), (25, 799641), (45, 444245), (69, 289725), (75, 266547), (115, 173835), (207, 96575), (225, 88849), (345, 57945), (575, 34767), (1035, 19315), (1725, 11589), (3863, 5175)]