20889620

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 45577728

約数和(自身を除く): 24688108

約数列:

[1, 2, 4, 5, 10, 20, 47, 71, 94, 142, 188, 235, 284, 313, 355, 470, 626, 710, 940, 1252, 1420, 1565, 3130, 3337, 6260, 6674, 13348, 14711, 16685, 22223, 29422, 33370, 44446, 58844, 66740, 73555, 88892, 111115, 147110, 222230, 294220, 444460, 1044481, 2088962, 4177924, 5222405, 10444810, 20889620]

約数ペア:

[(1, 20889620), (2, 10444810), (4, 5222405), (5, 4177924), (10, 2088962), (20, 1044481), (47, 444460), (71, 294220), (94, 222230), (142, 147110), (188, 111115), (235, 88892), (284, 73555), (313, 66740), (355, 58844), (470, 44446), (626, 33370), (710, 29422), (940, 22223), (1252, 16685), (1420, 14711), (1565, 13348), (3130, 6674), (3337, 6260)]