21725890

素因数分解:

$2^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{17107}}^1$

素因数の和:17241

約数の個数: 16

約数和(自身を含む): 39416832

約数和(自身を除く): 17690942

約数列:

[1, 2, 5, 10, 127, 254, 635, 1270, 17107, 34214, 85535, 171070, 2172589, 4345178, 10862945, 21725890]

約数ペア:

[(1, 21725890), (2, 10862945), (5, 4345178), (10, 2172589), (127, 171070), (254, 85535), (635, 34214), (1270, 17107)]