31259780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{397}}^1$

素因数の和:564

約数の個数: 48

約数和(自身を含む): 68468736

約数和(自身を除く): 37208956

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 127, 155, 254, 310, 397, 508, 620, 635, 794, 1270, 1588, 1985, 2540, 3937, 3970, 7874, 7940, 12307, 15748, 19685, 24614, 39370, 49228, 50419, 61535, 78740, 100838, 123070, 201676, 246140, 252095, 504190, 1008380, 1562989, 3125978, 6251956, 7814945, 15629890, 31259780]

約数ペア:

[(1, 31259780), (2, 15629890), (4, 7814945), (5, 6251956), (10, 3125978), (20, 1562989), (31, 1008380), (62, 504190), (124, 252095), (127, 246140), (155, 201676), (254, 123070), (310, 100838), (397, 78740), (508, 61535), (620, 50419), (635, 49228), (794, 39370), (1270, 24614), (1588, 19685), (1985, 15748), (2540, 12307), (3937, 7940), (3970, 7874)]