21366740

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{367}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 46738944

約数和(自身を除く): 25372204

約数列:

[1, 2, 4, 5, 10, 20, 41, 71, 82, 142, 164, 205, 284, 355, 367, 410, 710, 734, 820, 1420, 1468, 1835, 2911, 3670, 5822, 7340, 11644, 14555, 15047, 26057, 29110, 30094, 52114, 58220, 60188, 75235, 104228, 130285, 150470, 260570, 300940, 521140, 1068337, 2136674, 4273348, 5341685, 10683370, 21366740]

約数ペア:

[(1, 21366740), (2, 10683370), (4, 5341685), (5, 4273348), (10, 2136674), (20, 1068337), (41, 521140), (71, 300940), (82, 260570), (142, 150470), (164, 130285), (205, 104228), (284, 75235), (355, 60188), (367, 58220), (410, 52114), (710, 30094), (734, 29110), (820, 26057), (1420, 15047), (1468, 14555), (1835, 11644), (2911, 7340), (3670, 5822)]