28656380

素因数分解:

$2^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{5099}}^1$

素因数の和:5389

約数の個数: 24

約数和(自身を含む): 60404400

約数和(自身を除く): 31748020

約数列:

[1, 2, 4, 5, 10, 20, 281, 562, 1124, 1405, 2810, 5099, 5620, 10198, 20396, 25495, 50990, 101980, 1432819, 2865638, 5731276, 7164095, 14328190, 28656380]

約数ペア:

[(1, 28656380), (2, 14328190), (4, 7164095), (5, 5731276), (10, 2865638), (20, 1432819), (281, 101980), (562, 50990), (1124, 25495), (1405, 20396), (2810, 10198), (5099, 5620)]