1299967640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1048361}}^1$

素因数の和:1048403

約数の個数: 32

約数和(自身を含む): 3019282560

約数和(自身を除く): 1719314920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 1048361, 2096722, 4193444, 5241805, 8386888, 10483610, 20967220, 32499191, 41934440, 64998382, 129996764, 162495955, 259993528, 324991910, 649983820, 1299967640]

約数ペア:

[(1, 1299967640), (2, 649983820), (4, 324991910), (5, 259993528), (8, 162495955), (10, 129996764), (20, 64998382), (31, 41934440), (40, 32499191), (62, 20967220), (124, 10483610), (155, 8386888), (248, 5241805), (310, 4193444), (620, 2096722), (1240, 1048361)]