129171880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{349}}^1\times {\mathrm{487}}^1$

素因数の和:866

約数の個数: 64

約数和(自身を含む): 307440000

約数和(自身を除く): 178268120

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 349, 380, 487, 698, 760, 974, 1396, 1745, 1948, 2435, 2792, 3490, 3896, 4870, 6631, 6980, 9253, 9740, 13262, 13960, 18506, 19480, 26524, 33155, 37012, 46265, 53048, 66310, 74024, 92530, 132620, 169963, 185060, 265240, 339926, 370120, 679852, 849815, 1359704, 1699630, 3229297, 3399260, 6458594, 6798520, 12917188, 16146485, 25834376, 32292970, 64585940, 129171880]

約数ペア:

[(1, 129171880), (2, 64585940), (4, 32292970), (5, 25834376), (8, 16146485), (10, 12917188), (19, 6798520), (20, 6458594), (38, 3399260), (40, 3229297), (76, 1699630), (95, 1359704), (152, 849815), (190, 679852), (349, 370120), (380, 339926), (487, 265240), (698, 185060), (760, 169963), (974, 132620), (1396, 92530), (1745, 74024), (1948, 66310), (2435, 53048), (2792, 46265), (3490, 37012), (3896, 33155), (4870, 26524), (6631, 19480), (6980, 18506), (9253, 13960), (9740, 13262)]