20121365

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{8923}}^1$

素因数の和:8980

約数の個数: 16

約数和(自身を含む): 26986176

約数和(自身を除く): 6864811

約数列:

[1, 5, 11, 41, 55, 205, 451, 2255, 8923, 44615, 98153, 365843, 490765, 1829215, 4024273, 20121365]

約数ペア:

[(1, 20121365), (5, 4024273), (11, 1829215), (41, 490765), (55, 365843), (205, 98153), (451, 44615), (2255, 8923)]