18408760

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5171}}^1$

素因数の和:5271

約数の個数: 32

約数和(自身を含む): 41893200

約数和(自身を除く): 23484440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5171, 10342, 20684, 25855, 41368, 51710, 103420, 206840, 460219, 920438, 1840876, 2301095, 3681752, 4602190, 9204380, 18408760]

約数ペア:

[(1, 18408760), (2, 9204380), (4, 4602190), (5, 3681752), (8, 2301095), (10, 1840876), (20, 920438), (40, 460219), (89, 206840), (178, 103420), (356, 51710), (445, 41368), (712, 25855), (890, 20684), (1780, 10342), (3560, 5171)]