4003640

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{991}}^1$

素因数の和:1103

約数の個数: 32

約数和(自身を含む): 9106560

約数和(自身を除く): 5102920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 991, 1010, 1982, 2020, 3964, 4040, 4955, 7928, 9910, 19820, 39640, 100091, 200182, 400364, 500455, 800728, 1000910, 2001820, 4003640]

約数ペア:

[(1, 4003640), (2, 2001820), (4, 1000910), (5, 800728), (8, 500455), (10, 400364), (20, 200182), (40, 100091), (101, 39640), (202, 19820), (404, 9910), (505, 7928), (808, 4955), (991, 4040), (1010, 3964), (1982, 2020)]