18696520

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{3137}}^1$

素因数の和:3297

約数の個数: 32

約数和(自身を含む): 42363000

約数和(自身を除く): 23666480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 3137, 5960, 6274, 12548, 15685, 25096, 31370, 62740, 125480, 467413, 934826, 1869652, 2337065, 3739304, 4674130, 9348260, 18696520]

約数ペア:

[(1, 18696520), (2, 9348260), (4, 4674130), (5, 3739304), (8, 2337065), (10, 1869652), (20, 934826), (40, 467413), (149, 125480), (298, 62740), (596, 31370), (745, 25096), (1192, 15685), (1490, 12548), (2980, 6274), (3137, 5960)]