18207880

素因数分解:

$2^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{2543}}^1$

素因数の和:2733

約数の個数: 32

約数和(自身を含む): 41212800

約数和(自身を除く): 23004920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 179, 358, 716, 895, 1432, 1790, 2543, 3580, 5086, 7160, 10172, 12715, 20344, 25430, 50860, 101720, 455197, 910394, 1820788, 2275985, 3641576, 4551970, 9103940, 18207880]

約数ペア:

[(1, 18207880), (2, 9103940), (4, 4551970), (5, 3641576), (8, 2275985), (10, 1820788), (20, 910394), (40, 455197), (179, 101720), (358, 50860), (716, 25430), (895, 20344), (1432, 12715), (1790, 10172), (2543, 7160), (3580, 5086)]