18881480

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15227}}^1$

素因数の和:15269

約数の個数: 32

約数和(自身を含む): 43856640

約数和(自身を除く): 24975160

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15227, 30454, 60908, 76135, 121816, 152270, 304540, 472037, 609080, 944074, 1888148, 2360185, 3776296, 4720370, 9440740, 18881480]

約数ペア:

[(1, 18881480), (2, 9440740), (4, 4720370), (5, 3776296), (8, 2360185), (10, 1888148), (20, 944074), (31, 609080), (40, 472037), (62, 304540), (124, 152270), (155, 121816), (248, 76135), (310, 60908), (620, 30454), (1240, 15227)]