18175820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1319}}^1$

素因数の和:1394

約数の個数: 48

約数和(自身を含む): 41912640

約数和(自身を除く): 23736820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 212, 260, 265, 530, 689, 1060, 1319, 1378, 2638, 2756, 3445, 5276, 6595, 6890, 13190, 13780, 17147, 26380, 34294, 68588, 69907, 85735, 139814, 171470, 279628, 342940, 349535, 699070, 908791, 1398140, 1817582, 3635164, 4543955, 9087910, 18175820]

約数ペア:

[(1, 18175820), (2, 9087910), (4, 4543955), (5, 3635164), (10, 1817582), (13, 1398140), (20, 908791), (26, 699070), (52, 349535), (53, 342940), (65, 279628), (106, 171470), (130, 139814), (212, 85735), (260, 69907), (265, 68588), (530, 34294), (689, 26380), (1060, 17147), (1319, 13780), (1378, 13190), (2638, 6890), (2756, 6595), (3445, 5276)]