28018935

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:253

約数の個数: 72

約数和(自身を含む): 57513456

約数和(自身を除く): 29494521

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 97, 105, 131, 147, 245, 291, 315, 393, 441, 485, 655, 679, 735, 873, 917, 1179, 1455, 1965, 2037, 2205, 2751, 3395, 4365, 4585, 4753, 5895, 6111, 6419, 8253, 10185, 12707, 13755, 14259, 19257, 23765, 30555, 32095, 38121, 41265, 42777, 57771, 63535, 71295, 88949, 96285, 114363, 190605, 213885, 266847, 288855, 444745, 571815, 622643, 800541, 1334235, 1867929, 3113215, 4002705, 5603787, 9339645, 28018935]

約数ペア:

[(1, 28018935), (3, 9339645), (5, 5603787), (7, 4002705), (9, 3113215), (15, 1867929), (21, 1334235), (35, 800541), (45, 622643), (49, 571815), (63, 444745), (97, 288855), (105, 266847), (131, 213885), (147, 190605), (245, 114363), (291, 96285), (315, 88949), (393, 71295), (441, 63535), (485, 57771), (655, 42777), (679, 41265), (735, 38121), (873, 32095), (917, 30555), (1179, 23765), (1455, 19257), (1965, 14259), (2037, 13755), (2205, 12707), (2751, 10185), (3395, 8253), (4365, 6419), (4585, 6111), (4753, 5895)]