21866075

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{307}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 34831104

約数和(自身を除く): 12965029

約数列:

[1, 5, 7, 11, 25, 35, 37, 55, 77, 175, 185, 259, 275, 307, 385, 407, 925, 1295, 1535, 1925, 2035, 2149, 2849, 3377, 6475, 7675, 10175, 10745, 11359, 14245, 16885, 23639, 53725, 56795, 71225, 79513, 84425, 118195, 124949, 283975, 397565, 590975, 624745, 874643, 1987825, 3123725, 4373215, 21866075]

約数ペア:

[(1, 21866075), (5, 4373215), (7, 3123725), (11, 1987825), (25, 874643), (35, 624745), (37, 590975), (55, 397565), (77, 283975), (175, 124949), (185, 118195), (259, 84425), (275, 79513), (307, 71225), (385, 56795), (407, 53725), (925, 23639), (1295, 16885), (1535, 14245), (1925, 11359), (2035, 10745), (2149, 10175), (2849, 7675), (3377, 6475)]