20201472040

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{1272133}}^1$

素因数の和:1272541

約数の個数: 32

約数和(自身を含む): 45567839880

約数和(自身を除く): 25366367840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1588, 1985, 3176, 3970, 7940, 15880, 1272133, 2544266, 5088532, 6360665, 10177064, 12721330, 25442660, 50885320, 505036801, 1010073602, 2020147204, 2525184005, 4040294408, 5050368010, 10100736020, 20201472040]

約数ペア:

[(1, 20201472040), (2, 10100736020), (4, 5050368010), (5, 4040294408), (8, 2525184005), (10, 2020147204), (20, 1010073602), (40, 505036801), (397, 50885320), (794, 25442660), (1588, 12721330), (1985, 10177064), (3176, 6360665), (3970, 5088532), (7940, 2544266), (15880, 1272133)]