20391900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{101}}^1\times {\mathrm{673}}^1$

素因数の和:791

約数の個数: 72

約数和(自身を含む): 59673264

約数和(自身を除く): 39281364

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 101, 150, 202, 300, 303, 404, 505, 606, 673, 1010, 1212, 1346, 1515, 2019, 2020, 2525, 2692, 3030, 3365, 4038, 5050, 6060, 6730, 7575, 8076, 10095, 10100, 13460, 15150, 16825, 20190, 30300, 33650, 40380, 50475, 67300, 67973, 100950, 135946, 201900, 203919, 271892, 339865, 407838, 679730, 815676, 1019595, 1359460, 1699325, 2039190, 3398650, 4078380, 5097975, 6797300, 10195950, 20391900]

約数ペア:

[(1, 20391900), (2, 10195950), (3, 6797300), (4, 5097975), (5, 4078380), (6, 3398650), (10, 2039190), (12, 1699325), (15, 1359460), (20, 1019595), (25, 815676), (30, 679730), (50, 407838), (60, 339865), (75, 271892), (100, 203919), (101, 201900), (150, 135946), (202, 100950), (300, 67973), (303, 67300), (404, 50475), (505, 40380), (606, 33650), (673, 30300), (1010, 20190), (1212, 16825), (1346, 15150), (1515, 13460), (2019, 10100), (2020, 10095), (2525, 8076), (2692, 7575), (3030, 6730), (3365, 6060), (4038, 5050)]