6663640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2731}}^1$

素因数の和:2803

約数の個数: 32

約数和(自身を含む): 15244560

約数和(自身を除く): 8580920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 2731, 5462, 10924, 13655, 21848, 27310, 54620, 109240, 166591, 333182, 666364, 832955, 1332728, 1665910, 3331820, 6663640]

約数ペア:

[(1, 6663640), (2, 3331820), (4, 1665910), (5, 1332728), (8, 832955), (10, 666364), (20, 333182), (40, 166591), (61, 109240), (122, 54620), (244, 27310), (305, 21848), (488, 13655), (610, 10924), (1220, 5462), (2440, 2731)]