18396475

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1$

素因数の和:319

約数の個数: 24

約数和(自身を含む): 23706320

約数和(自身を除く): 5309845

約数列:

[1, 5, 25, 43, 109, 157, 215, 545, 785, 1075, 2725, 3925, 4687, 6751, 17113, 23435, 33755, 85565, 117175, 168775, 427825, 735859, 3679295, 18396475]

約数ペア:

[(1, 18396475), (5, 3679295), (25, 735859), (43, 427825), (109, 168775), (157, 117175), (215, 85565), (545, 33755), (785, 23435), (1075, 17113), (2725, 6751), (3925, 4687)]