21250910

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{577}}^1$

素因数の和:740

約数の個数: 32

約数和(自身を含む): 39951360

約数和(自身を除く): 18700450

約数列:

[1, 2, 5, 10, 29, 58, 127, 145, 254, 290, 577, 635, 1154, 1270, 2885, 3683, 5770, 7366, 16733, 18415, 33466, 36830, 73279, 83665, 146558, 167330, 366395, 732790, 2125091, 4250182, 10625455, 21250910]

約数ペア:

[(1, 21250910), (2, 10625455), (5, 4250182), (10, 2125091), (29, 732790), (58, 366395), (127, 167330), (145, 146558), (254, 83665), (290, 73279), (577, 36830), (635, 33466), (1154, 18415), (1270, 16733), (2885, 7366), (3683, 5770)]