1591240720

素因数分解:

$2^4\times 5^1\times {\mathrm{19890509}}^1$

素因数の和:19890522

約数の個数: 20

約数和(自身を含む): 3699634860

約数和(自身を除く): 2108394140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 19890509, 39781018, 79562036, 99452545, 159124072, 198905090, 318248144, 397810180, 795620360, 1591240720]

約数ペア:

[(1, 1591240720), (2, 795620360), (4, 397810180), (5, 318248144), (8, 198905090), (10, 159124072), (16, 99452545), (20, 79562036), (40, 39781018), (80, 19890509)]