20813820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{263}}^1\times {\mathrm{1319}}^1$

素因数の和:1594

約数の個数: 48

約数和(自身を含む): 58544640

約数和(自身を除く): 37730820

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 263, 526, 789, 1052, 1315, 1319, 1578, 2630, 2638, 3156, 3945, 3957, 5260, 5276, 6595, 7890, 7914, 13190, 15780, 15828, 19785, 26380, 39570, 79140, 346897, 693794, 1040691, 1387588, 1734485, 2081382, 3468970, 4162764, 5203455, 6937940, 10406910, 20813820]

約数ペア:

[(1, 20813820), (2, 10406910), (3, 6937940), (4, 5203455), (5, 4162764), (6, 3468970), (10, 2081382), (12, 1734485), (15, 1387588), (20, 1040691), (30, 693794), (60, 346897), (263, 79140), (526, 39570), (789, 26380), (1052, 19785), (1315, 15828), (1319, 15780), (1578, 13190), (2630, 7914), (2638, 7890), (3156, 6595), (3945, 5276), (3957, 5260)]