12730240

素因数分解:

$2^7\times 5^1\times {\mathrm{19891}}^1$

素因数の和:19910

約数の個数: 32

約数和(自身を含む): 30434760

約数和(自身を除く): 17704520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 19891, 39782, 79564, 99455, 159128, 198910, 318256, 397820, 636512, 795640, 1273024, 1591280, 2546048, 3182560, 6365120, 12730240]

約数ペア:

[(1, 12730240), (2, 6365120), (4, 3182560), (5, 2546048), (8, 1591280), (10, 1273024), (16, 795640), (20, 636512), (32, 397820), (40, 318256), (64, 198910), (80, 159128), (128, 99455), (160, 79564), (320, 39782), (640, 19891)]