16688745

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 30888000

約数和(自身を除く): 14199255

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 131, 149, 171, 285, 393, 447, 655, 745, 855, 1179, 1341, 1965, 2235, 2489, 2831, 5895, 6705, 7467, 8493, 12445, 14155, 19519, 22401, 25479, 37335, 42465, 58557, 97595, 112005, 127395, 175671, 292785, 370861, 878355, 1112583, 1854305, 3337749, 5562915, 16688745]

約数ペア:

[(1, 16688745), (3, 5562915), (5, 3337749), (9, 1854305), (15, 1112583), (19, 878355), (45, 370861), (57, 292785), (95, 175671), (131, 127395), (149, 112005), (171, 97595), (285, 58557), (393, 42465), (447, 37335), (655, 25479), (745, 22401), (855, 19519), (1179, 14155), (1341, 12445), (1965, 8493), (2235, 7467), (2489, 6705), (2831, 5895)]