20201390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{1783}}^1$

素因数の和:1904

約数の個数: 32

約数和(自身を含む): 40075776

約数和(自身を除く): 19874386

約数列:

[1, 2, 5, 10, 11, 22, 55, 103, 110, 206, 515, 1030, 1133, 1783, 2266, 3566, 5665, 8915, 11330, 17830, 19613, 39226, 98065, 183649, 196130, 367298, 918245, 1836490, 2020139, 4040278, 10100695, 20201390]

約数ペア:

[(1, 20201390), (2, 10100695), (5, 4040278), (10, 2020139), (11, 1836490), (22, 918245), (55, 367298), (103, 196130), (110, 183649), (206, 98065), (515, 39226), (1030, 19613), (1133, 17830), (1783, 11330), (2266, 8915), (3566, 5665)]