19373571

素因数分解:

$3^2\times 7^2\times {\mathrm{197}}^1\times {\mathrm{223}}^1$

素因数の和:440

約数の個数: 36

約数和(自身を含む): 32864832

約数和(自身を除く): 13491261

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 197, 223, 441, 591, 669, 1379, 1561, 1773, 2007, 4137, 4683, 9653, 10927, 12411, 14049, 28959, 32781, 43931, 86877, 98343, 131793, 307517, 395379, 922551, 2152619, 2767653, 6457857, 19373571]

約数ペア:

[(1, 19373571), (3, 6457857), (7, 2767653), (9, 2152619), (21, 922551), (49, 395379), (63, 307517), (147, 131793), (197, 98343), (223, 86877), (441, 43931), (591, 32781), (669, 28959), (1379, 14049), (1561, 12411), (1773, 10927), (2007, 9653), (4137, 4683)]