208981640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{746363}}^1$

素因数の和:746381

約数の個数: 32

約数和(自身を含む): 537382080

約数和(自身を除く): 328400440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 746363, 1492726, 2985452, 3731815, 5224541, 5970904, 7463630, 10449082, 14927260, 20898164, 26122705, 29854520, 41796328, 52245410, 104490820, 208981640]

約数ペア:

[(1, 208981640), (2, 104490820), (4, 52245410), (5, 41796328), (7, 29854520), (8, 26122705), (10, 20898164), (14, 14927260), (20, 10449082), (28, 7463630), (35, 5970904), (40, 5224541), (56, 3731815), (70, 2985452), (140, 1492726), (280, 746363)]