18610420

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{181}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 40452048

約数和(自身を除く): 21841628

約数列:

[1, 2, 4, 5, 10, 20, 53, 97, 106, 181, 194, 212, 265, 362, 388, 485, 530, 724, 905, 970, 1060, 1810, 1940, 3620, 5141, 9593, 10282, 17557, 19186, 20564, 25705, 35114, 38372, 47965, 51410, 70228, 87785, 95930, 102820, 175570, 191860, 351140, 930521, 1861042, 3722084, 4652605, 9305210, 18610420]

約数ペア:

[(1, 18610420), (2, 9305210), (4, 4652605), (5, 3722084), (10, 1861042), (20, 930521), (53, 351140), (97, 191860), (106, 175570), (181, 102820), (194, 95930), (212, 87785), (265, 70228), (362, 51410), (388, 47965), (485, 38372), (530, 35114), (724, 25705), (905, 20564), (970, 19186), (1060, 17557), (1810, 10282), (1940, 9593), (3620, 5141)]