21000746455

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{557}}^1\times {\mathrm{30529}}^1$

素因数の和:31123

約数の個数: 32

約数和(自身を含む): 28620043200

約数和(自身を除く): 7619296745

約数列:

[1, 5, 13, 19, 65, 95, 247, 557, 1235, 2785, 7241, 10583, 30529, 36205, 52915, 137579, 152645, 396877, 580051, 687895, 1984385, 2900255, 7540663, 17004653, 37703315, 85023265, 221060489, 323088407, 1105302445, 1615442035, 4200149291, 21000746455]

約数ペア:

[(1, 21000746455), (5, 4200149291), (13, 1615442035), (19, 1105302445), (65, 323088407), (95, 221060489), (247, 85023265), (557, 37703315), (1235, 17004653), (2785, 7540663), (7241, 2900255), (10583, 1984385), (30529, 687895), (36205, 580051), (52915, 396877), (137579, 152645)]