19887740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32077}}^1$

素因数の和:32117

約数の個数: 24

約数和(自身を含む): 43112832

約数和(自身を除く): 23225092

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 32077, 64154, 128308, 160385, 320770, 641540, 994387, 1988774, 3977548, 4971935, 9943870, 19887740]

約数ペア:

[(1, 19887740), (2, 9943870), (4, 4971935), (5, 3977548), (10, 1988774), (20, 994387), (31, 641540), (62, 320770), (124, 160385), (155, 128308), (310, 64154), (620, 32077)]