19815656

素因数分解:

$2^3\times 7^1\times {\mathrm{431}}^1\times {\mathrm{821}}^1$

素因数の和:1265

約数の個数: 32

約数和(自身を含む): 42612480

約数和(自身を除く): 22796824

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 431, 821, 862, 1642, 1724, 3017, 3284, 3448, 5747, 6034, 6568, 11494, 12068, 22988, 24136, 45976, 353851, 707702, 1415404, 2476957, 2830808, 4953914, 9907828, 19815656]

約数ペア:

[(1, 19815656), (2, 9907828), (4, 4953914), (7, 2830808), (8, 2476957), (14, 1415404), (28, 707702), (56, 353851), (431, 45976), (821, 24136), (862, 22988), (1642, 12068), (1724, 11494), (3017, 6568), (3284, 6034), (3448, 5747)]