20921852

素因数分解:

$2^2\times 7^1\times {\mathrm{349}}^1\times {\mathrm{2141}}^1$

素因数の和:2501

約数の個数: 24

約数和(自身を含む): 41983200

約数和(自身を除く): 21061348

約数列:

[1, 2, 4, 7, 14, 28, 349, 698, 1396, 2141, 2443, 4282, 4886, 8564, 9772, 14987, 29974, 59948, 747209, 1494418, 2988836, 5230463, 10460926, 20921852]

約数ペア:

[(1, 20921852), (2, 10460926), (4, 5230463), (7, 2988836), (14, 1494418), (28, 747209), (349, 59948), (698, 29974), (1396, 14987), (2141, 9772), (2443, 8564), (4282, 4886)]