28686620

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{13159}}^1$

素因数の和:13277

約数の個数: 24

約数和(自身を含む): 60799200

約数和(自身を除く): 32112580

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 13159, 26318, 52636, 65795, 131590, 263180, 1434331, 2868662, 5737324, 7171655, 14343310, 28686620]

約数ペア:

[(1, 28686620), (2, 14343310), (4, 7171655), (5, 5737324), (10, 2868662), (20, 1434331), (109, 263180), (218, 131590), (436, 65795), (545, 52636), (1090, 26318), (2180, 13159)]