204824920

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{12163}}^1$

素因数の和:12595

約数の個数: 32

約数和(自身を含む): 461988720

約数和(自身を除く): 257163800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1684, 2105, 3368, 4210, 8420, 12163, 16840, 24326, 48652, 60815, 97304, 121630, 243260, 486520, 5120623, 10241246, 20482492, 25603115, 40964984, 51206230, 102412460, 204824920]

約数ペア:

[(1, 204824920), (2, 102412460), (4, 51206230), (5, 40964984), (8, 25603115), (10, 20482492), (20, 10241246), (40, 5120623), (421, 486520), (842, 243260), (1684, 121630), (2105, 97304), (3368, 60815), (4210, 48652), (8420, 24326), (12163, 16840)]