13231420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{21341}}^1$

素因数の和:21381

約数の個数: 24

約数和(自身を含む): 28683648

約数和(自身を除く): 15452228

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 21341, 42682, 85364, 106705, 213410, 426820, 661571, 1323142, 2646284, 3307855, 6615710, 13231420]

約数ペア:

[(1, 13231420), (2, 6615710), (4, 3307855), (5, 2646284), (10, 1323142), (20, 661571), (31, 426820), (62, 213410), (124, 106705), (155, 85364), (310, 42682), (620, 21341)]