1687980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{4019}}^1$

素因数の和:4038

約数の個数: 48

約数和(自身を含む): 5402880

約数和(自身を除く): 3714900

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 4019, 8038, 12057, 16076, 20095, 24114, 28133, 40190, 48228, 56266, 60285, 80380, 84399, 112532, 120570, 140665, 168798, 241140, 281330, 337596, 421995, 562660, 843990, 1687980]

約数ペア:

[(1, 1687980), (2, 843990), (3, 562660), (4, 421995), (5, 337596), (6, 281330), (7, 241140), (10, 168798), (12, 140665), (14, 120570), (15, 112532), (20, 84399), (21, 80380), (28, 60285), (30, 56266), (35, 48228), (42, 40190), (60, 28133), (70, 24114), (84, 20095), (105, 16076), (140, 12057), (210, 8038), (420, 4019)]