18535545

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{163}}^1$

素因数の和:219

約数の個数: 72

約数和(自身を含む): 38990016

約数和(自身を除く): 20454471

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 57, 63, 95, 105, 133, 163, 171, 285, 315, 361, 399, 489, 665, 815, 855, 1083, 1141, 1197, 1467, 1805, 1995, 2445, 2527, 3097, 3249, 3423, 5415, 5705, 5985, 7335, 7581, 9291, 10269, 12635, 15485, 16245, 17115, 21679, 22743, 27873, 37905, 46455, 51345, 58843, 65037, 108395, 113715, 139365, 176529, 195111, 294215, 325185, 411901, 529587, 882645, 975555, 1235703, 2059505, 2647935, 3707109, 6178515, 18535545]

約数ペア:

[(1, 18535545), (3, 6178515), (5, 3707109), (7, 2647935), (9, 2059505), (15, 1235703), (19, 975555), (21, 882645), (35, 529587), (45, 411901), (57, 325185), (63, 294215), (95, 195111), (105, 176529), (133, 139365), (163, 113715), (171, 108395), (285, 65037), (315, 58843), (361, 51345), (399, 46455), (489, 37905), (665, 27873), (815, 22743), (855, 21679), (1083, 17115), (1141, 16245), (1197, 15485), (1467, 12635), (1805, 10269), (1995, 9291), (2445, 7581), (2527, 7335), (3097, 5985), (3249, 5705), (3423, 5415)]