213688520

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{73181}}^1$

素因数の和:73265

約数の個数: 32

約数和(自身を含む): 487392120

約数和(自身を除く): 273703600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 73181, 146362, 292724, 365905, 585448, 731810, 1463620, 2927240, 5342213, 10684426, 21368852, 26711065, 42737704, 53422130, 106844260, 213688520]

約数ペア:

[(1, 213688520), (2, 106844260), (4, 53422130), (5, 42737704), (8, 26711065), (10, 21368852), (20, 10684426), (40, 5342213), (73, 2927240), (146, 1463620), (292, 731810), (365, 585448), (584, 365905), (730, 292724), (1460, 146362), (2920, 73181)]