31306280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{25247}}^1$

素因数の和:25289

約数の個数: 32

約数和(自身を含む): 72714240

約数和(自身を除く): 41407960

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 25247, 50494, 100988, 126235, 201976, 252470, 504940, 782657, 1009880, 1565314, 3130628, 3913285, 6261256, 7826570, 15653140, 31306280]

約数ペア:

[(1, 31306280), (2, 15653140), (4, 7826570), (5, 6261256), (8, 3913285), (10, 3130628), (20, 1565314), (31, 1009880), (40, 782657), (62, 504940), (124, 252470), (155, 201976), (248, 126235), (310, 100988), (620, 50494), (1240, 25247)]