18080140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{69539}}^1$

素因数の和:69561

約数の個数: 24

約数和(自身を含む): 40889520

約数和(自身を除く): 22809380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 69539, 139078, 278156, 347695, 695390, 904007, 1390780, 1808014, 3616028, 4520035, 9040070, 18080140]

約数ペア:

[(1, 18080140), (2, 9040070), (4, 4520035), (5, 3616028), (10, 1808014), (13, 1390780), (20, 904007), (26, 695390), (52, 347695), (65, 278156), (130, 139078), (260, 69539)]