17782020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{443}}^1$

素因数の和:681

約数の個数: 72

約数和(自身を含む): 54302976

約数和(自身を除く): 36520956

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 223, 443, 446, 669, 886, 892, 1115, 1329, 1338, 1772, 2007, 2215, 2230, 2658, 2676, 3345, 3987, 4014, 4430, 4460, 5316, 6645, 6690, 7974, 8028, 8860, 10035, 13290, 13380, 15948, 19935, 20070, 26580, 39870, 40140, 79740, 98789, 197578, 296367, 395156, 493945, 592734, 889101, 987890, 1185468, 1481835, 1778202, 1975780, 2963670, 3556404, 4445505, 5927340, 8891010, 17782020]

約数ペア:

[(1, 17782020), (2, 8891010), (3, 5927340), (4, 4445505), (5, 3556404), (6, 2963670), (9, 1975780), (10, 1778202), (12, 1481835), (15, 1185468), (18, 987890), (20, 889101), (30, 592734), (36, 493945), (45, 395156), (60, 296367), (90, 197578), (180, 98789), (223, 79740), (443, 40140), (446, 39870), (669, 26580), (886, 20070), (892, 19935), (1115, 15948), (1329, 13380), (1338, 13290), (1772, 10035), (2007, 8860), (2215, 8028), (2230, 7974), (2658, 6690), (2676, 6645), (3345, 5316), (3987, 4460), (4014, 4430)]