18223640

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5119}}^1$

素因数の和:5219

約数の個数: 32

約数和(自身を含む): 41472000

約数和(自身を除く): 23248360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5119, 10238, 20476, 25595, 40952, 51190, 102380, 204760, 455591, 911182, 1822364, 2277955, 3644728, 4555910, 9111820, 18223640]

約数ペア:

[(1, 18223640), (2, 9111820), (4, 4555910), (5, 3644728), (8, 2277955), (10, 1822364), (20, 911182), (40, 455591), (89, 204760), (178, 102380), (356, 51190), (445, 40952), (712, 25595), (890, 20476), (1780, 10238), (3560, 5119)]