21435820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{153113}}^1$

素因数の和:153129

約数の個数: 24

約数和(自身を含む): 51446304

約数和(自身を除く): 30010484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 153113, 306226, 612452, 765565, 1071791, 1531130, 2143582, 3062260, 4287164, 5358955, 10717910, 21435820]

約数ペア:

[(1, 21435820), (2, 10717910), (4, 5358955), (5, 4287164), (7, 3062260), (10, 2143582), (14, 1531130), (20, 1071791), (28, 765565), (35, 612452), (70, 306226), (140, 153113)]