128520080

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{647}}^1$

素因数の和:864

約数の個数: 80

約数和(自身を含む): 323979264

約数和(自身を除く): 195459184

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 191, 208, 260, 382, 520, 647, 764, 955, 1040, 1294, 1528, 1910, 2483, 2588, 3056, 3235, 3820, 4966, 5176, 6470, 7640, 8411, 9932, 10352, 12415, 12940, 15280, 16822, 19864, 24830, 25880, 33644, 39728, 42055, 49660, 51760, 67288, 84110, 99320, 123577, 134576, 168220, 198640, 247154, 336440, 494308, 617885, 672880, 988616, 1235770, 1606501, 1977232, 2471540, 3213002, 4943080, 6426004, 8032505, 9886160, 12852008, 16065010, 25704016, 32130020, 64260040, 128520080]

約数ペア:

[(1, 128520080), (2, 64260040), (4, 32130020), (5, 25704016), (8, 16065010), (10, 12852008), (13, 9886160), (16, 8032505), (20, 6426004), (26, 4943080), (40, 3213002), (52, 2471540), (65, 1977232), (80, 1606501), (104, 1235770), (130, 988616), (191, 672880), (208, 617885), (260, 494308), (382, 336440), (520, 247154), (647, 198640), (764, 168220), (955, 134576), (1040, 123577), (1294, 99320), (1528, 84110), (1910, 67288), (2483, 51760), (2588, 49660), (3056, 42055), (3235, 39728), (3820, 33644), (4966, 25880), (5176, 24830), (6470, 19864), (7640, 16822), (8411, 15280), (9932, 12940), (10352, 12415)]