155005220

素因数分解:

$2^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{27581}}^1$

素因数の和:27871

約数の個数: 24

約数和(自身を含む): 326681208

約数和(自身を除く): 171675988

約数列:

[1, 2, 4, 5, 10, 20, 281, 562, 1124, 1405, 2810, 5620, 27581, 55162, 110324, 137905, 275810, 551620, 7750261, 15500522, 31001044, 38751305, 77502610, 155005220]

約数ペア:

[(1, 155005220), (2, 77502610), (4, 38751305), (5, 31001044), (10, 15500522), (20, 7750261), (281, 551620), (562, 275810), (1124, 137905), (1405, 110324), (2810, 55162), (5620, 27581)]