21389844

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{1709}}^1$

素因数の和:1872

約数の個数: 48

約数和(自身を含む): 57456000

約数和(自身を除く): 36066156

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 149, 298, 447, 596, 894, 1043, 1709, 1788, 2086, 3129, 3418, 4172, 5127, 6258, 6836, 10254, 11963, 12516, 20508, 23926, 35889, 47852, 71778, 143556, 254641, 509282, 763923, 1018564, 1527846, 1782487, 3055692, 3564974, 5347461, 7129948, 10694922, 21389844]

約数ペア:

[(1, 21389844), (2, 10694922), (3, 7129948), (4, 5347461), (6, 3564974), (7, 3055692), (12, 1782487), (14, 1527846), (21, 1018564), (28, 763923), (42, 509282), (84, 254641), (149, 143556), (298, 71778), (447, 47852), (596, 35889), (894, 23926), (1043, 20508), (1709, 12516), (1788, 11963), (2086, 10254), (3129, 6836), (3418, 6258), (4172, 5127)]