18746260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72101}}^1$

素因数の和:72123

約数の個数: 24

約数和(自身を含む): 42395976

約数和(自身を除く): 23649716

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72101, 144202, 288404, 360505, 721010, 937313, 1442020, 1874626, 3749252, 4686565, 9373130, 18746260]

約数ペア:

[(1, 18746260), (2, 9373130), (4, 4686565), (5, 3749252), (10, 1874626), (13, 1442020), (20, 937313), (26, 721010), (52, 360505), (65, 288404), (130, 144202), (260, 72101)]