18908940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{3541}}^1$

素因数の和:3642

約数の個数: 48

約数和(自身を含む): 53555040

約数和(自身を除く): 34646100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 89, 178, 267, 356, 445, 534, 890, 1068, 1335, 1780, 2670, 3541, 5340, 7082, 10623, 14164, 17705, 21246, 35410, 42492, 53115, 70820, 106230, 212460, 315149, 630298, 945447, 1260596, 1575745, 1890894, 3151490, 3781788, 4727235, 6302980, 9454470, 18908940]

約数ペア:

[(1, 18908940), (2, 9454470), (3, 6302980), (4, 4727235), (5, 3781788), (6, 3151490), (10, 1890894), (12, 1575745), (15, 1260596), (20, 945447), (30, 630298), (60, 315149), (89, 212460), (178, 106230), (267, 70820), (356, 53115), (445, 42492), (534, 35410), (890, 21246), (1068, 17705), (1335, 14164), (1780, 10623), (2670, 7082), (3541, 5340)]