21386512

素因数分解:

$2^4\times 7^1\times {\mathrm{257}}^1\times {\mathrm{743}}^1$

素因数の和:1015

約数の個数: 40

約数和(自身を含む): 47604096

約数和(自身を除く): 26217584

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 257, 514, 743, 1028, 1486, 1799, 2056, 2972, 3598, 4112, 5201, 5944, 7196, 10402, 11888, 14392, 20804, 28784, 41608, 83216, 190951, 381902, 763804, 1336657, 1527608, 2673314, 3055216, 5346628, 10693256, 21386512]

約数ペア:

[(1, 21386512), (2, 10693256), (4, 5346628), (7, 3055216), (8, 2673314), (14, 1527608), (16, 1336657), (28, 763804), (56, 381902), (112, 190951), (257, 83216), (514, 41608), (743, 28784), (1028, 20804), (1486, 14392), (1799, 11888), (2056, 10402), (2972, 7196), (3598, 5944), (4112, 5201)]