21000768291

素因数分解:

$3^3\times {\mathrm{109}}^1\times {\mathrm{113}}^1\times {\mathrm{63149}}^1$

素因数の和:63380

約数の個数: 32

約数和(自身を含む): 31676040000

約数和(自身を除く): 10675271709

約数列:

[1, 3, 9, 27, 109, 113, 327, 339, 981, 1017, 2943, 3051, 12317, 36951, 63149, 110853, 189447, 332559, 568341, 1705023, 6883241, 7135837, 20649723, 21407511, 61949169, 64222533, 185847507, 192667599, 777806233, 2333418699, 7000256097, 21000768291]

約数ペア:

[(1, 21000768291), (3, 7000256097), (9, 2333418699), (27, 777806233), (109, 192667599), (113, 185847507), (327, 64222533), (339, 61949169), (981, 21407511), (1017, 20649723), (2943, 7135837), (3051, 6883241), (12317, 1705023), (36951, 568341), (63149, 332559), (110853, 189447)]