81511740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12239}}^1$

素因数の和:12291

約数の個数: 72

約数和(自身を含む): 253955520

約数和(自身を除く): 172443780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 60, 74, 90, 111, 148, 180, 185, 222, 333, 370, 444, 555, 666, 740, 1110, 1332, 1665, 2220, 3330, 6660, 12239, 24478, 36717, 48956, 61195, 73434, 110151, 122390, 146868, 183585, 220302, 244780, 367170, 440604, 452843, 550755, 734340, 905686, 1101510, 1358529, 1811372, 2203020, 2264215, 2717058, 4075587, 4528430, 5434116, 6792645, 8151174, 9056860, 13585290, 16302348, 20377935, 27170580, 40755870, 81511740]

約数ペア:

[(1, 81511740), (2, 40755870), (3, 27170580), (4, 20377935), (5, 16302348), (6, 13585290), (9, 9056860), (10, 8151174), (12, 6792645), (15, 5434116), (18, 4528430), (20, 4075587), (30, 2717058), (36, 2264215), (37, 2203020), (45, 1811372), (60, 1358529), (74, 1101510), (90, 905686), (111, 734340), (148, 550755), (180, 452843), (185, 440604), (222, 367170), (333, 244780), (370, 220302), (444, 183585), (555, 146868), (666, 122390), (740, 110151), (1110, 73434), (1332, 61195), (1665, 48956), (2220, 36717), (3330, 24478), (6660, 12239)]