289771880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{233687}}^1$

素因数の和:233729

約数の個数: 32

約数和(自身を含む): 673021440

約数和(自身を除く): 383249560

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 233687, 467374, 934748, 1168435, 1869496, 2336870, 4673740, 7244297, 9347480, 14488594, 28977188, 36221485, 57954376, 72442970, 144885940, 289771880]

約数ペア:

[(1, 289771880), (2, 144885940), (4, 72442970), (5, 57954376), (8, 36221485), (10, 28977188), (20, 14488594), (31, 9347480), (40, 7244297), (62, 4673740), (124, 2336870), (155, 1869496), (248, 1168435), (310, 934748), (620, 467374), (1240, 233687)]