20881384

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{379}}^1$

素因数の和:553

約数の個数: 32

約数和(自身を含む): 40219200

約数和(自身を除く): 19337816

約数列:

[1, 2, 4, 8, 71, 97, 142, 194, 284, 379, 388, 568, 758, 776, 1516, 3032, 6887, 13774, 26909, 27548, 36763, 53818, 55096, 73526, 107636, 147052, 215272, 294104, 2610173, 5220346, 10440692, 20881384]

約数ペア:

[(1, 20881384), (2, 10440692), (4, 5220346), (8, 2610173), (71, 294104), (97, 215272), (142, 147052), (194, 107636), (284, 73526), (379, 55096), (388, 53818), (568, 36763), (758, 27548), (776, 26909), (1516, 13774), (3032, 6887)]