18543880

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1847}}^1$

素因数の和:2109

約数の個数: 32

約数和(自身を含む): 41912640

約数和(自身を除く): 23368760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 1847, 2008, 2510, 3694, 5020, 7388, 9235, 10040, 14776, 18470, 36940, 73880, 463597, 927194, 1854388, 2317985, 3708776, 4635970, 9271940, 18543880]

約数ペア:

[(1, 18543880), (2, 9271940), (4, 4635970), (5, 3708776), (8, 2317985), (10, 1854388), (20, 927194), (40, 463597), (251, 73880), (502, 36940), (1004, 18470), (1255, 14776), (1847, 10040), (2008, 9235), (2510, 7388), (3694, 5020)]