20357440

素因数分解:

$2^6\times 5^1\times {\mathrm{63617}}^1$

素因数の和:63634

約数の個数: 28

約数和(自身を含む): 48476916

約数和(自身を除く): 28119476

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 63617, 127234, 254468, 318085, 508936, 636170, 1017872, 1272340, 2035744, 2544680, 4071488, 5089360, 10178720, 20357440]

約数ペア:

[(1, 20357440), (2, 10178720), (4, 5089360), (5, 4071488), (8, 2544680), (10, 2035744), (16, 1272340), (20, 1017872), (32, 636170), (40, 508936), (64, 318085), (80, 254468), (160, 127234), (320, 63617)]