21174712

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{2099}}^1$

素因数の和:2215

約数の個数: 32

約数和(自身を含む): 43218000

約数和(自身を除く): 22043288

約数列:

[1, 2, 4, 8, 13, 26, 52, 97, 104, 194, 388, 776, 1261, 2099, 2522, 4198, 5044, 8396, 10088, 16792, 27287, 54574, 109148, 203603, 218296, 407206, 814412, 1628824, 2646839, 5293678, 10587356, 21174712]

約数ペア:

[(1, 21174712), (2, 10587356), (4, 5293678), (8, 2646839), (13, 1628824), (26, 814412), (52, 407206), (97, 218296), (104, 203603), (194, 109148), (388, 54574), (776, 27287), (1261, 16792), (2099, 10088), (2522, 8396), (4198, 5044)]