218486540

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{266447}}^1$

素因数の和:266497

約数の個数: 24

約数和(自身を含む): 470014272

約数和(自身を除く): 251527732

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 266447, 532894, 1065788, 1332235, 2664470, 5328940, 10924327, 21848654, 43697308, 54621635, 109243270, 218486540]

約数ペア:

[(1, 218486540), (2, 109243270), (4, 54621635), (5, 43697308), (10, 21848654), (20, 10924327), (41, 5328940), (82, 2664470), (164, 1332235), (205, 1065788), (410, 532894), (820, 266447)]