28818280

素因数分解:

$2^3\times 5^1\times {\mathrm{727}}^1\times {\mathrm{991}}^1$

素因数の和:1729

約数の個数: 32

約数和(自身を含む): 64995840

約数和(自身を除く): 36177560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 727, 991, 1454, 1982, 2908, 3635, 3964, 4955, 5816, 7270, 7928, 9910, 14540, 19820, 29080, 39640, 720457, 1440914, 2881828, 3602285, 5763656, 7204570, 14409140, 28818280]

約数ペア:

[(1, 28818280), (2, 14409140), (4, 7204570), (5, 5763656), (8, 3602285), (10, 2881828), (20, 1440914), (40, 720457), (727, 39640), (991, 29080), (1454, 19820), (1982, 14540), (2908, 9910), (3635, 7928), (3964, 7270), (4955, 5816)]