28987980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{69019}}^1$

素因数の和:69038

約数の個数: 48

約数和(自身を含む): 92762880

約数和(自身を除く): 63774900

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, 69019, 138038, 207057, 276076, 345095, 414114, 483133, 690190, 828228, 966266, 1035285, 1380380, 1449399, 1932532, 2070570, 2415665, 2898798, 4141140, 4831330, 5797596, 7246995, 9662660, 14493990, 28987980]

約数ペア:

[(1, 28987980), (2, 14493990), (3, 9662660), (4, 7246995), (5, 5797596), (6, 4831330), (7, 4141140), (10, 2898798), (12, 2415665), (14, 2070570), (15, 1932532), (20, 1449399), (21, 1380380), (28, 1035285), (30, 966266), (35, 828228), (42, 690190), (60, 483133), (70, 414114), (84, 345095), (105, 276076), (140, 207057), (210, 138038), (420, 69019)]