19814795

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1$

素因数の和:180

約数の個数: 64

約数和(自身を含む): 33094656

約数和(自身を除く): 13279861

約数列:

[1, 5, 7, 11, 13, 35, 37, 55, 65, 77, 91, 107, 143, 185, 259, 385, 407, 455, 481, 535, 715, 749, 1001, 1177, 1295, 1391, 2035, 2405, 2849, 3367, 3745, 3959, 5005, 5291, 5885, 6955, 8239, 9737, 14245, 15301, 16835, 19795, 26455, 27713, 37037, 41195, 43549, 48685, 51467, 76505, 107107, 138565, 185185, 217745, 257335, 304843, 360269, 535535, 566137, 1524215, 1801345, 2830685, 3962959, 19814795]

約数ペア:

[(1, 19814795), (5, 3962959), (7, 2830685), (11, 1801345), (13, 1524215), (35, 566137), (37, 535535), (55, 360269), (65, 304843), (77, 257335), (91, 217745), (107, 185185), (143, 138565), (185, 107107), (259, 76505), (385, 51467), (407, 48685), (455, 43549), (481, 41195), (535, 37037), (715, 27713), (749, 26455), (1001, 19795), (1177, 16835), (1295, 15301), (1391, 14245), (2035, 9737), (2405, 8239), (2849, 6955), (3367, 5885), (3745, 5291), (3959, 5005)]