420401247

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{389}}^1\times {\mathrm{971}}^1$

素因数の和:1423

約数の個数: 32

約数和(自身を含む): 655050240

約数和(自身を除く): 234648993

約数列:

[1, 3, 7, 21, 53, 159, 371, 389, 971, 1113, 1167, 2723, 2913, 6797, 8169, 20391, 20617, 51463, 61851, 144319, 154389, 360241, 377719, 432957, 1080723, 1133157, 2644033, 7932099, 20019107, 60057321, 140133749, 420401247]

約数ペア:

[(1, 420401247), (3, 140133749), (7, 60057321), (21, 20019107), (53, 7932099), (159, 2644033), (371, 1133157), (389, 1080723), (971, 432957), (1113, 377719), (1167, 360241), (2723, 154389), (2913, 144319), (6797, 61851), (8169, 51463), (20391, 20617)]