20696220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3709}}^1$

素因数の和:3755

約数の個数: 72

約数和(自身を含む): 64821120

約数和(自身を除く): 44124900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 180, 186, 279, 310, 372, 465, 558, 620, 930, 1116, 1395, 1860, 2790, 3709, 5580, 7418, 11127, 14836, 18545, 22254, 33381, 37090, 44508, 55635, 66762, 74180, 111270, 114979, 133524, 166905, 222540, 229958, 333810, 344937, 459916, 574895, 667620, 689874, 1034811, 1149790, 1379748, 1724685, 2069622, 2299580, 3449370, 4139244, 5174055, 6898740, 10348110, 20696220]

約数ペア:

[(1, 20696220), (2, 10348110), (3, 6898740), (4, 5174055), (5, 4139244), (6, 3449370), (9, 2299580), (10, 2069622), (12, 1724685), (15, 1379748), (18, 1149790), (20, 1034811), (30, 689874), (31, 667620), (36, 574895), (45, 459916), (60, 344937), (62, 333810), (90, 229958), (93, 222540), (124, 166905), (155, 133524), (180, 114979), (186, 111270), (279, 74180), (310, 66762), (372, 55635), (465, 44508), (558, 37090), (620, 33381), (930, 22254), (1116, 18545), (1395, 14836), (1860, 11127), (2790, 7418), (3709, 5580)]