28100720

素因数分解:

$2^4\times 5^1\times {\mathrm{351259}}^1$

素因数の和:351272

約数の個数: 20

約数和(自身を含む): 65334360

約数和(自身を除く): 37233640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 351259, 702518, 1405036, 1756295, 2810072, 3512590, 5620144, 7025180, 14050360, 28100720]

約数ペア:

[(1, 28100720), (2, 14050360), (4, 7025180), (5, 5620144), (8, 3512590), (10, 2810072), (16, 1756295), (20, 1405036), (40, 702518), (80, 351259)]