81115060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311981}}^1$

素因数の和:312003

約数の個数: 24

約数和(自身を含む): 183445416

約数和(自身を除く): 102330356

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 311981, 623962, 1247924, 1559905, 3119810, 4055753, 6239620, 8111506, 16223012, 20278765, 40557530, 81115060]

約数ペア:

[(1, 81115060), (2, 40557530), (4, 20278765), (5, 16223012), (10, 8111506), (13, 6239620), (20, 4055753), (26, 3119810), (52, 1559905), (65, 1247924), (130, 623962), (260, 311981)]