4027880

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{997}}^1$

素因数の和:1109

約数の個数: 32

約数和(自身を含む): 9161640

約数和(自身を除く): 5133760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 997, 1010, 1994, 2020, 3988, 4040, 4985, 7976, 9970, 19940, 39880, 100697, 201394, 402788, 503485, 805576, 1006970, 2013940, 4027880]

約数ペア:

[(1, 4027880), (2, 2013940), (4, 1006970), (5, 805576), (8, 503485), (10, 402788), (20, 201394), (40, 100697), (101, 39880), (202, 19940), (404, 9970), (505, 7976), (808, 4985), (997, 4040), (1010, 3988), (1994, 2020)]