18921160

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15259}}^1$

素因数の和:15301

約数の個数: 32

約数和(自身を含む): 43948800

約数和(自身を除く): 25027640

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15259, 30518, 61036, 76295, 122072, 152590, 305180, 473029, 610360, 946058, 1892116, 2365145, 3784232, 4730290, 9460580, 18921160]

約数ペア:

[(1, 18921160), (2, 9460580), (4, 4730290), (5, 3784232), (8, 2365145), (10, 1892116), (20, 946058), (31, 610360), (40, 473029), (62, 305180), (124, 152590), (155, 122072), (248, 76295), (310, 61036), (620, 30518), (1240, 15259)]