201103780

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{20479}}^1$

素因数の和:20979

約数の個数: 24

約数和(自身を含む): 423198720

約数和(自身を除く): 222094940

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 4910, 9820, 20479, 40958, 81916, 102395, 204790, 409580, 10055189, 20110378, 40220756, 50275945, 100551890, 201103780]

約数ペア:

[(1, 201103780), (2, 100551890), (4, 50275945), (5, 40220756), (10, 20110378), (20, 10055189), (491, 409580), (982, 204790), (1964, 102395), (2455, 81916), (4910, 40958), (9820, 20479)]