28133720

素因数分解:

$2^3\times 5^1\times {\mathrm{281}}^1\times {\mathrm{2503}}^1$

素因数の和:2795

約数の個数: 32

約数和(自身を含む): 63551520

約数和(自身を除く): 35417800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 281, 562, 1124, 1405, 2248, 2503, 2810, 5006, 5620, 10012, 11240, 12515, 20024, 25030, 50060, 100120, 703343, 1406686, 2813372, 3516715, 5626744, 7033430, 14066860, 28133720]

約数ペア:

[(1, 28133720), (2, 14066860), (4, 7033430), (5, 5626744), (8, 3516715), (10, 2813372), (20, 1406686), (40, 703343), (281, 100120), (562, 50060), (1124, 25030), (1405, 20024), (2248, 12515), (2503, 11240), (2810, 10012), (5006, 5620)]