21711340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{155081}}^1$

素因数の和:155097

約数の個数: 24

約数和(自身を含む): 52107552

約数和(自身を除く): 30396212

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 155081, 310162, 620324, 775405, 1085567, 1550810, 2171134, 3101620, 4342268, 5427835, 10855670, 21711340]

約数ペア:

[(1, 21711340), (2, 10855670), (4, 5427835), (5, 4342268), (7, 3101620), (10, 2171134), (14, 1550810), (20, 1085567), (28, 775405), (35, 620324), (70, 310162), (140, 155081)]