78439620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{186761}}^1$

素因数の和:186780

約数の個数: 48

約数和(自身を含む): 251008128

約数和(自身を除く): 172568508

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 186761, 373522, 560283, 747044, 933805, 1120566, 1307327, 1867610, 2241132, 2614654, 2801415, 3735220, 3921981, 5229308, 5602830, 6536635, 7843962, 11205660, 13073270, 15687924, 19609905, 26146540, 39219810, 78439620]

約数ペア:

[(1, 78439620), (2, 39219810), (3, 26146540), (4, 19609905), (5, 15687924), (6, 13073270), (7, 11205660), (10, 7843962), (12, 6536635), (14, 5602830), (15, 5229308), (20, 3921981), (21, 3735220), (28, 2801415), (30, 2614654), (35, 2241132), (42, 1867610), (60, 1307327), (70, 1120566), (84, 933805), (105, 747044), (140, 560283), (210, 373522), (420, 186761)]