21350480

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{7213}}^1$

素因数の和:7263

約数の個数: 40

約数和(自身を含む): 50988552

約数和(自身を除く): 29638072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 7213, 14426, 28852, 36065, 57704, 72130, 115408, 144260, 266881, 288520, 533762, 577040, 1067524, 1334405, 2135048, 2668810, 4270096, 5337620, 10675240, 21350480]

約数ペア:

[(1, 21350480), (2, 10675240), (4, 5337620), (5, 4270096), (8, 2668810), (10, 2135048), (16, 1334405), (20, 1067524), (37, 577040), (40, 533762), (74, 288520), (80, 266881), (148, 144260), (185, 115408), (296, 72130), (370, 57704), (592, 36065), (740, 28852), (1480, 14426), (2960, 7213)]