20121557781

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{241}}^1\times {\mathrm{25793}}^1$

素因数の和:26133

約数の個数: 32

約数和(自身を含む): 29363064192

約数和(自身を除く): 9241506411

約数列:

[1, 3, 13, 39, 83, 241, 249, 723, 1079, 3133, 3237, 9399, 20003, 25793, 60009, 77379, 260039, 335309, 780117, 1005927, 2140819, 6216113, 6422457, 18648339, 27830647, 80809469, 83491941, 242428407, 515937379, 1547812137, 6707185927, 20121557781]

約数ペア:

[(1, 20121557781), (3, 6707185927), (13, 1547812137), (39, 515937379), (83, 242428407), (241, 83491941), (249, 80809469), (723, 27830647), (1079, 18648339), (3133, 6422457), (3237, 6216113), (9399, 2140819), (20003, 1005927), (25793, 780117), (60009, 335309), (77379, 260039)]