21069040

素因数分解:

$2^4\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1181}}^1$

素因数の和:1417

約数の個数: 40

約数和(自身を含む): 49246848

約数和(自身を除く): 28177808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 1115, 1181, 1784, 2230, 2362, 3568, 4460, 4724, 5905, 8920, 9448, 11810, 17840, 18896, 23620, 47240, 94480, 263363, 526726, 1053452, 1316815, 2106904, 2633630, 4213808, 5267260, 10534520, 21069040]

約数ペア:

[(1, 21069040), (2, 10534520), (4, 5267260), (5, 4213808), (8, 2633630), (10, 2106904), (16, 1316815), (20, 1053452), (40, 526726), (80, 263363), (223, 94480), (446, 47240), (892, 23620), (1115, 18896), (1181, 17840), (1784, 11810), (2230, 9448), (2362, 8920), (3568, 5905), (4460, 4724)]