668367020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{461}}^1\times {\mathrm{1021}}^1$

素因数の和:1562

約数の個数: 48

約数和(自身を含む): 1427823936

約数和(自身を除く): 759456916

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 461, 710, 922, 1021, 1420, 1844, 2042, 2305, 4084, 4610, 5105, 9220, 10210, 20420, 32731, 65462, 72491, 130924, 144982, 163655, 289964, 327310, 362455, 470681, 654620, 724910, 941362, 1449820, 1882724, 2353405, 4706810, 9413620, 33418351, 66836702, 133673404, 167091755, 334183510, 668367020]

約数ペア:

[(1, 668367020), (2, 334183510), (4, 167091755), (5, 133673404), (10, 66836702), (20, 33418351), (71, 9413620), (142, 4706810), (284, 2353405), (355, 1882724), (461, 1449820), (710, 941362), (922, 724910), (1021, 654620), (1420, 470681), (1844, 362455), (2042, 327310), (2305, 289964), (4084, 163655), (4610, 144982), (5105, 130924), (9220, 72491), (10210, 65462), (20420, 32731)]