18485680

素因数分解:

$2^4\times 5^1\times {\mathrm{269}}^1\times {\mathrm{859}}^1$

素因数の和:1141

約数の個数: 40

約数和(自身を含む): 43189200

約数和(自身を除く): 24703520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 269, 538, 859, 1076, 1345, 1718, 2152, 2690, 3436, 4295, 4304, 5380, 6872, 8590, 10760, 13744, 17180, 21520, 34360, 68720, 231071, 462142, 924284, 1155355, 1848568, 2310710, 3697136, 4621420, 9242840, 18485680]

約数ペア:

[(1, 18485680), (2, 9242840), (4, 4621420), (5, 3697136), (8, 2310710), (10, 1848568), (16, 1155355), (20, 924284), (40, 462142), (80, 231071), (269, 68720), (538, 34360), (859, 21520), (1076, 17180), (1345, 13744), (1718, 10760), (2152, 8590), (2690, 6872), (3436, 5380), (4295, 4304)]