427980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{1019}}^1$

素因数の和:1038

約数の個数: 48

約数和(自身を含む): 1370880

約数和(自身を除く): 942900

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, 1019, 2038, 3057, 4076, 5095, 6114, 7133, 10190, 12228, 14266, 15285, 20380, 21399, 28532, 30570, 35665, 42798, 61140, 71330, 85596, 106995, 142660, 213990, 427980]

約数ペア:

[(1, 427980), (2, 213990), (3, 142660), (4, 106995), (5, 85596), (6, 71330), (7, 61140), (10, 42798), (12, 35665), (14, 30570), (15, 28532), (20, 21399), (21, 20380), (28, 15285), (30, 14266), (35, 12228), (42, 10190), (60, 7133), (70, 6114), (84, 5095), (105, 4076), (140, 3057), (210, 2038), (420, 1019)]