21594140

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{11131}}^1$

素因数の和:11237

約数の個数: 24

約数和(自身を含む): 45819312

約数和(自身を除く): 24225172

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 11131, 22262, 44524, 55655, 111310, 222620, 1079707, 2159414, 4318828, 5398535, 10797070, 21594140]

約数ペア:

[(1, 21594140), (2, 10797070), (4, 5398535), (5, 4318828), (10, 2159414), (20, 1079707), (97, 222620), (194, 111310), (388, 55655), (485, 44524), (970, 22262), (1940, 11131)]