28042780

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{13613}}^1$

素因数の和:13725

約数の個数: 24

約数和(自身を含む): 59465952

約数和(自身を除く): 31423172

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 13613, 27226, 54452, 68065, 136130, 272260, 1402139, 2804278, 5608556, 7010695, 14021390, 28042780]

約数ペア:

[(1, 28042780), (2, 14021390), (4, 7010695), (5, 5608556), (10, 2804278), (20, 1402139), (103, 272260), (206, 136130), (412, 68065), (515, 54452), (1030, 27226), (2060, 13613)]