87722780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{106979}}^1$

素因数の和:107029

約数の個数: 24

約数和(自身を含む): 188712720

約数和(自身を除く): 100989940

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 106979, 213958, 427916, 534895, 1069790, 2139580, 4386139, 8772278, 17544556, 21930695, 43861390, 87722780]

約数ペア:

[(1, 87722780), (2, 43861390), (4, 21930695), (5, 17544556), (10, 8772278), (20, 4386139), (41, 2139580), (82, 1069790), (164, 534895), (205, 427916), (410, 213958), (820, 106979)]