21158788

素因数分解:

$2^2\times 7^2\times {\mathrm{41}}^1\times {\mathrm{2633}}^1$

素因数の和:2692

約数の個数: 36

約数和(自身を含む): 44140572

約数和(自身を除く): 22981784

約数列:

[1, 2, 4, 7, 14, 28, 41, 49, 82, 98, 164, 196, 287, 574, 1148, 2009, 2633, 4018, 5266, 8036, 10532, 18431, 36862, 73724, 107953, 129017, 215906, 258034, 431812, 516068, 755671, 1511342, 3022684, 5289697, 10579394, 21158788]

約数ペア:

[(1, 21158788), (2, 10579394), (4, 5289697), (7, 3022684), (14, 1511342), (28, 755671), (41, 516068), (49, 431812), (82, 258034), (98, 215906), (164, 129017), (196, 107953), (287, 73724), (574, 36862), (1148, 18431), (2009, 10532), (2633, 8036), (4018, 5266)]