208771880

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{121379}}^1$

素因数の和:121433

約数の個数: 32

約数和(自身を含む): 480664800

約数和(自身を除く): 271892920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 121379, 242758, 485516, 606895, 971032, 1213790, 2427580, 4855160, 5219297, 10438594, 20877188, 26096485, 41754376, 52192970, 104385940, 208771880]

約数ペア:

[(1, 208771880), (2, 104385940), (4, 52192970), (5, 41754376), (8, 26096485), (10, 20877188), (20, 10438594), (40, 5219297), (43, 4855160), (86, 2427580), (172, 1213790), (215, 971032), (344, 606895), (430, 485516), (860, 242758), (1720, 121379)]