28160820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1549}}^1$

素因数の和:1665

約数の個数: 72

約数和(自身を含む): 86322600

約数和(自身を除く): 58161780

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, 1549, 1818, 2020, 3030, 3098, 3636, 4545, 4647, 6060, 6196, 7745, 9090, 9294, 13941, 15490, 18180, 18588, 23235, 27882, 30980, 46470, 55764, 69705, 92940, 139410, 156449, 278820, 312898, 469347, 625796, 782245, 938694, 1408041, 1564490, 1877388, 2346735, 2816082, 3128980, 4693470, 5632164, 7040205, 9386940, 14080410, 28160820]

約数ペア:

[(1, 28160820), (2, 14080410), (3, 9386940), (4, 7040205), (5, 5632164), (6, 4693470), (9, 3128980), (10, 2816082), (12, 2346735), (15, 1877388), (18, 1564490), (20, 1408041), (30, 938694), (36, 782245), (45, 625796), (60, 469347), (90, 312898), (101, 278820), (180, 156449), (202, 139410), (303, 92940), (404, 69705), (505, 55764), (606, 46470), (909, 30980), (1010, 27882), (1212, 23235), (1515, 18588), (1549, 18180), (1818, 15490), (2020, 13941), (3030, 9294), (3098, 9090), (3636, 7745), (4545, 6196), (4647, 6060)]