18403515

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{193}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 34743072

約数和(自身を除く): 16339557

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 163, 193, 195, 489, 579, 585, 815, 965, 1467, 1737, 2119, 2445, 2509, 2895, 6357, 7335, 7527, 8685, 10595, 12545, 19071, 22581, 31459, 31785, 37635, 94377, 95355, 112905, 157295, 283131, 408967, 471885, 1226901, 1415655, 2044835, 3680703, 6134505, 18403515]

約数ペア:

[(1, 18403515), (3, 6134505), (5, 3680703), (9, 2044835), (13, 1415655), (15, 1226901), (39, 471885), (45, 408967), (65, 283131), (117, 157295), (163, 112905), (193, 95355), (195, 94377), (489, 37635), (579, 31785), (585, 31459), (815, 22581), (965, 19071), (1467, 12545), (1737, 10595), (2119, 8685), (2445, 7527), (2509, 7335), (2895, 6357)]