290023640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{102121}}^1$

素因数の和:102203

約数の個数: 32

約数和(自身を含む): 661750560

約数和(自身を除く): 371726920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 102121, 204242, 408484, 510605, 816968, 1021210, 2042420, 4084840, 7250591, 14501182, 29002364, 36252955, 58004728, 72505910, 145011820, 290023640]

約数ペア:

[(1, 290023640), (2, 145011820), (4, 72505910), (5, 58004728), (8, 36252955), (10, 29002364), (20, 14501182), (40, 7250591), (71, 4084840), (142, 2042420), (284, 1021210), (355, 816968), (568, 510605), (710, 408484), (1420, 204242), (2840, 102121)]