21006957307

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{251}}^1\times {\mathrm{277}}^1\times {\mathrm{2539}}^1$

素因数の和:3091

約数の個数: 32

約数和(自身を含む): 25623682560

約数和(自身を除く): 4616725253

約数列:

[1, 7, 17, 119, 251, 277, 1757, 1939, 2539, 4267, 4709, 17773, 29869, 32963, 43163, 69527, 302141, 486689, 637289, 703303, 1181959, 4461023, 4923121, 8273713, 10833913, 11956151, 75837391, 83693057, 176529053, 1235703371, 3000993901, 21006957307]

約数ペア:

[(1, 21006957307), (7, 3000993901), (17, 1235703371), (119, 176529053), (251, 83693057), (277, 75837391), (1757, 11956151), (1939, 10833913), (2539, 8273713), (4267, 4923121), (4709, 4461023), (17773, 1181959), (29869, 703303), (32963, 637289), (43163, 486689), (69527, 302141)]