18995095

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:152

約数の個数: 48

約数和(自身を含む): 28498176

約数和(自身を除く): 9503081

約数列:

[1, 5, 7, 31, 35, 41, 49, 61, 155, 205, 217, 245, 287, 305, 427, 1085, 1271, 1435, 1519, 1891, 2009, 2135, 2501, 2989, 6355, 7595, 8897, 9455, 10045, 12505, 13237, 14945, 17507, 44485, 62279, 66185, 77531, 87535, 92659, 122549, 311395, 387655, 463295, 542717, 612745, 2713585, 3799019, 18995095]

約数ペア:

[(1, 18995095), (5, 3799019), (7, 2713585), (31, 612745), (35, 542717), (41, 463295), (49, 387655), (61, 311395), (155, 122549), (205, 92659), (217, 87535), (245, 77531), (287, 66185), (305, 62279), (427, 44485), (1085, 17507), (1271, 14945), (1435, 13237), (1519, 12505), (1891, 10045), (2009, 9455), (2135, 8897), (2501, 7595), (2989, 6355)]