21155888908

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{68687951}}^1$

素因数の和:68687973

約数の個数: 24

約数和(自身を含む): 46158303744

約数和(自身を除く): 25002414836

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 68687951, 137375902, 274751804, 480815657, 755567461, 961631314, 1511134922, 1923262628, 3022269844, 5288972227, 10577944454, 21155888908]

約数ペア:

[(1, 21155888908), (2, 10577944454), (4, 5288972227), (7, 3022269844), (11, 1923262628), (14, 1511134922), (22, 961631314), (28, 755567461), (44, 480815657), (77, 274751804), (154, 137375902), (308, 68687951)]