28808240

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{8783}}^1$

素因数の和:8837

約数の個数: 40

約数和(自身を含む): 68620608

約数和(自身を除く): 39812368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 8783, 17566, 35132, 43915, 70264, 87830, 140528, 175660, 351320, 360103, 702640, 720206, 1440412, 1800515, 2880824, 3601030, 5761648, 7202060, 14404120, 28808240]

約数ペア:

[(1, 28808240), (2, 14404120), (4, 7202060), (5, 5761648), (8, 3601030), (10, 2880824), (16, 1800515), (20, 1440412), (40, 720206), (41, 702640), (80, 360103), (82, 351320), (164, 175660), (205, 140528), (328, 87830), (410, 70264), (656, 43915), (820, 35132), (1640, 17566), (3280, 8783)]