281691880

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1\times {\mathrm{919}}^1$

素因数の和:1106

約数の個数: 64

約数和(自身を含む): 649152000

約数和(自身を除く): 367460120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 97, 158, 194, 316, 388, 395, 485, 632, 776, 790, 919, 970, 1580, 1838, 1940, 3160, 3676, 3880, 4595, 7352, 7663, 9190, 15326, 18380, 30652, 36760, 38315, 61304, 72601, 76630, 89143, 145202, 153260, 178286, 290404, 306520, 356572, 363005, 445715, 580808, 713144, 726010, 891430, 1452020, 1782860, 2904040, 3565720, 7042297, 14084594, 28169188, 35211485, 56338376, 70422970, 140845940, 281691880]

約数ペア:

[(1, 281691880), (2, 140845940), (4, 70422970), (5, 56338376), (8, 35211485), (10, 28169188), (20, 14084594), (40, 7042297), (79, 3565720), (97, 2904040), (158, 1782860), (194, 1452020), (316, 891430), (388, 726010), (395, 713144), (485, 580808), (632, 445715), (776, 363005), (790, 356572), (919, 306520), (970, 290404), (1580, 178286), (1838, 153260), (1940, 145202), (3160, 89143), (3676, 76630), (3880, 72601), (4595, 61304), (7352, 38315), (7663, 36760), (9190, 30652), (15326, 18380)]