19918926

素因数分解:

$2^1\times 3^3\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{163}}^1$

素因数の和:278

約数の個数: 64

約数和(自身を含む): 46602240

約数和(自身を除く): 26683314

約数列:

[1, 2, 3, 6, 9, 18, 27, 31, 54, 62, 73, 93, 146, 163, 186, 219, 279, 326, 438, 489, 558, 657, 837, 978, 1314, 1467, 1674, 1971, 2263, 2934, 3942, 4401, 4526, 5053, 6789, 8802, 10106, 11899, 13578, 15159, 20367, 23798, 30318, 35697, 40734, 45477, 61101, 71394, 90954, 107091, 122202, 136431, 214182, 272862, 321273, 368869, 642546, 737738, 1106607, 2213214, 3319821, 6639642, 9959463, 19918926]

約数ペア:

[(1, 19918926), (2, 9959463), (3, 6639642), (6, 3319821), (9, 2213214), (18, 1106607), (27, 737738), (31, 642546), (54, 368869), (62, 321273), (73, 272862), (93, 214182), (146, 136431), (163, 122202), (186, 107091), (219, 90954), (279, 71394), (326, 61101), (438, 45477), (489, 40734), (558, 35697), (657, 30318), (837, 23798), (978, 20367), (1314, 15159), (1467, 13578), (1674, 11899), (1971, 10106), (2263, 8802), (2934, 6789), (3942, 5053), (4401, 4526)]