81335020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{3769}}^1$

素因数の和:3874

約数の個数: 48

約数和(自身を含む): 186207840

約数和(自身を除く): 104872820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 83, 130, 166, 260, 332, 415, 830, 1079, 1660, 2158, 3769, 4316, 5395, 7538, 10790, 15076, 18845, 21580, 37690, 48997, 75380, 97994, 195988, 244985, 312827, 489970, 625654, 979940, 1251308, 1564135, 3128270, 4066751, 6256540, 8133502, 16267004, 20333755, 40667510, 81335020]

約数ペア:

[(1, 81335020), (2, 40667510), (4, 20333755), (5, 16267004), (10, 8133502), (13, 6256540), (20, 4066751), (26, 3128270), (52, 1564135), (65, 1251308), (83, 979940), (130, 625654), (166, 489970), (260, 312827), (332, 244985), (415, 195988), (830, 97994), (1079, 75380), (1660, 48997), (2158, 37690), (3769, 21580), (4316, 18845), (5395, 15076), (7538, 10790)]