19663420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{140453}}^1$

素因数の和:140469

約数の個数: 24

約数和(自身を含む): 47192544

約数和(自身を除く): 27529124

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 140453, 280906, 561812, 702265, 983171, 1404530, 1966342, 2809060, 3932684, 4915855, 9831710, 19663420]

約数ペア:

[(1, 19663420), (2, 9831710), (4, 4915855), (5, 3932684), (7, 2809060), (10, 1966342), (14, 1404530), (20, 983171), (28, 702265), (35, 561812), (70, 280906), (140, 140453)]