20124680

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5653}}^1$

素因数の和:5753

約数の個数: 32

約数和(自身を含む): 45797400

約数和(自身を除く): 25672720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5653, 11306, 22612, 28265, 45224, 56530, 113060, 226120, 503117, 1006234, 2012468, 2515585, 4024936, 5031170, 10062340, 20124680]

約数ペア:

[(1, 20124680), (2, 10062340), (4, 5031170), (5, 4024936), (8, 2515585), (10, 2012468), (20, 1006234), (40, 503117), (89, 226120), (178, 113060), (356, 56530), (445, 45224), (712, 28265), (890, 22612), (1780, 11306), (3560, 5653)]