280210020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{65777}}^1$

素因数の和:65860

約数の個数: 48

約数和(自身を含む): 795650688

約数和(自身を除く): 515440668

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 65777, 131554, 197331, 263108, 328885, 394662, 657770, 789324, 986655, 1315540, 1973310, 3946620, 4670167, 9340334, 14010501, 18680668, 23350835, 28021002, 46701670, 56042004, 70052505, 93403340, 140105010, 280210020]

約数ペア:

[(1, 280210020), (2, 140105010), (3, 93403340), (4, 70052505), (5, 56042004), (6, 46701670), (10, 28021002), (12, 23350835), (15, 18680668), (20, 14010501), (30, 9340334), (60, 4670167), (71, 3946620), (142, 1973310), (213, 1315540), (284, 986655), (355, 789324), (426, 657770), (710, 394662), (852, 328885), (1065, 263108), (1420, 197331), (2130, 131554), (4260, 65777)]