18278840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{14741}}^1$

素因数の和:14783

約数の個数: 32

約数和(自身を含む): 42456960

約数和(自身を除く): 24178120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 14741, 29482, 58964, 73705, 117928, 147410, 294820, 456971, 589640, 913942, 1827884, 2284855, 3655768, 4569710, 9139420, 18278840]

約数ペア:

[(1, 18278840), (2, 9139420), (4, 4569710), (5, 3655768), (8, 2284855), (10, 1827884), (20, 913942), (31, 589640), (40, 456971), (62, 294820), (124, 147410), (155, 117928), (248, 73705), (310, 58964), (620, 29482), (1240, 14741)]