20413820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3391}}^1$

素因数の和:3450

約数の個数: 48

約数和(自身を含む): 50147328

約数和(自身を除く): 29733508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 430, 602, 860, 1204, 1505, 3010, 3391, 6020, 6782, 13564, 16955, 23737, 33910, 47474, 67820, 94948, 118685, 145813, 237370, 291626, 474740, 583252, 729065, 1020691, 1458130, 2041382, 2916260, 4082764, 5103455, 10206910, 20413820]

約数ペア:

[(1, 20413820), (2, 10206910), (4, 5103455), (5, 4082764), (7, 2916260), (10, 2041382), (14, 1458130), (20, 1020691), (28, 729065), (35, 583252), (43, 474740), (70, 291626), (86, 237370), (140, 145813), (172, 118685), (215, 94948), (301, 67820), (430, 47474), (602, 33910), (860, 23737), (1204, 16955), (1505, 13564), (3010, 6782), (3391, 6020)]