19019980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1319}}^1$

素因数の和:1438

約数の個数: 48

約数和(自身を含む): 46126080

約数和(自身を除く): 27106100

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 103, 140, 206, 412, 515, 721, 1030, 1319, 1442, 2060, 2638, 2884, 3605, 5276, 6595, 7210, 9233, 13190, 14420, 18466, 26380, 36932, 46165, 92330, 135857, 184660, 271714, 543428, 679285, 950999, 1358570, 1901998, 2717140, 3803996, 4754995, 9509990, 19019980]

約数ペア:

[(1, 19019980), (2, 9509990), (4, 4754995), (5, 3803996), (7, 2717140), (10, 1901998), (14, 1358570), (20, 950999), (28, 679285), (35, 543428), (70, 271714), (103, 184660), (140, 135857), (206, 92330), (412, 46165), (515, 36932), (721, 26380), (1030, 18466), (1319, 14420), (1442, 13190), (2060, 9233), (2638, 7210), (2884, 6595), (3605, 5276)]