28818020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18713}}^1$

素因数の和:18740

約数の個数: 48

約数和(自身を含む): 75454848

約数和(自身を除く): 46636828

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 18713, 37426, 74852, 93565, 130991, 187130, 205843, 261982, 374260, 411686, 523964, 654955, 823372, 1029215, 1309910, 1440901, 2058430, 2619820, 2881802, 4116860, 5763604, 7204505, 14409010, 28818020]

約数ペア:

[(1, 28818020), (2, 14409010), (4, 7204505), (5, 5763604), (7, 4116860), (10, 2881802), (11, 2619820), (14, 2058430), (20, 1440901), (22, 1309910), (28, 1029215), (35, 823372), (44, 654955), (55, 523964), (70, 411686), (77, 374260), (110, 261982), (140, 205843), (154, 187130), (220, 130991), (308, 93565), (385, 74852), (770, 37426), (1540, 18713)]