256209660

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{203341}}^1$

素因数の和:203363

約数の個数: 72

約数和(自身を含む): 888197856

約数和(自身を除く): 631988196

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 203341, 406682, 610023, 813364, 1016705, 1220046, 1423387, 1830069, 2033410, 2440092, 2846774, 3050115, 3660138, 4066820, 4270161, 5693548, 6100230, 7116935, 7320276, 8540322, 9150345, 12200460, 12810483, 14233870, 17080644, 18300690, 21350805, 25620966, 28467740, 36601380, 42701610, 51241932, 64052415, 85403220, 128104830, 256209660]

約数ペア:

[(1, 256209660), (2, 128104830), (3, 85403220), (4, 64052415), (5, 51241932), (6, 42701610), (7, 36601380), (9, 28467740), (10, 25620966), (12, 21350805), (14, 18300690), (15, 17080644), (18, 14233870), (20, 12810483), (21, 12200460), (28, 9150345), (30, 8540322), (35, 7320276), (36, 7116935), (42, 6100230), (45, 5693548), (60, 4270161), (63, 4066820), (70, 3660138), (84, 3050115), (90, 2846774), (105, 2440092), (126, 2033410), (140, 1830069), (180, 1423387), (210, 1220046), (252, 1016705), (315, 813364), (420, 610023), (630, 406682), (1260, 203341)]