18748340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72109}}^1$

素因数の和:72131

約数の個数: 24

約数和(自身を含む): 42400680

約数和(自身を除く): 23652340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72109, 144218, 288436, 360545, 721090, 937417, 1442180, 1874834, 3749668, 4687085, 9374170, 18748340]

約数ペア:

[(1, 18748340), (2, 9374170), (4, 4687085), (5, 3749668), (10, 1874834), (13, 1442180), (20, 937417), (26, 721090), (52, 360545), (65, 288436), (130, 144218), (260, 72109)]