28560780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1571}}^1$

素因数の和:1687

約数の個数: 72

約数和(自身を含む): 87547824

約数和(自身を除く): 58987044

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 101, 180, 202, 303, 404, 505, 606, 909, 1010, 1212, 1515, 1571, 1818, 2020, 3030, 3142, 3636, 4545, 4713, 6060, 6284, 7855, 9090, 9426, 14139, 15710, 18180, 18852, 23565, 28278, 31420, 47130, 56556, 70695, 94260, 141390, 158671, 282780, 317342, 476013, 634684, 793355, 952026, 1428039, 1586710, 1904052, 2380065, 2856078, 3173420, 4760130, 5712156, 7140195, 9520260, 14280390, 28560780]

約数ペア:

[(1, 28560780), (2, 14280390), (3, 9520260), (4, 7140195), (5, 5712156), (6, 4760130), (9, 3173420), (10, 2856078), (12, 2380065), (15, 1904052), (18, 1586710), (20, 1428039), (30, 952026), (36, 793355), (45, 634684), (60, 476013), (90, 317342), (101, 282780), (180, 158671), (202, 141390), (303, 94260), (404, 70695), (505, 56556), (606, 47130), (909, 31420), (1010, 28278), (1212, 23565), (1515, 18852), (1571, 18180), (1818, 15710), (2020, 14139), (3030, 9426), (3142, 9090), (3636, 7855), (4545, 6284), (4713, 6060)]