18308120

素因数分解:

$2^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{2557}}^1$

素因数の和:2747

約数の個数: 32

約数和(自身を含む): 41439600

約数和(自身を除く): 23131480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 179, 358, 716, 895, 1432, 1790, 2557, 3580, 5114, 7160, 10228, 12785, 20456, 25570, 51140, 102280, 457703, 915406, 1830812, 2288515, 3661624, 4577030, 9154060, 18308120]

約数ペア:

[(1, 18308120), (2, 9154060), (4, 4577030), (5, 3661624), (8, 2288515), (10, 1830812), (20, 915406), (40, 457703), (179, 102280), (358, 51140), (716, 25570), (895, 20456), (1432, 12785), (1790, 10228), (2557, 7160), (3580, 5114)]