31831420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{51341}}^1$

素因数の和:51381

約数の個数: 24

約数和(自身を含む): 69003648

約数和(自身を除く): 37172228

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 51341, 102682, 205364, 256705, 513410, 1026820, 1591571, 3183142, 6366284, 7957855, 15915710, 31831420]

約数ペア:

[(1, 31831420), (2, 15915710), (4, 7957855), (5, 6366284), (10, 3183142), (20, 1591571), (31, 1026820), (62, 513410), (124, 256705), (155, 205364), (310, 102682), (620, 51341)]