21544915

素因数分解:

$5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{131}}^1$

素因数の和:307

約数の個数: 32

約数和(自身を含む): 30818304

約数和(自身を除く): 9273389

約数列:

[1, 5, 7, 35, 37, 127, 131, 185, 259, 635, 655, 889, 917, 1295, 4445, 4585, 4699, 4847, 16637, 23495, 24235, 32893, 33929, 83185, 116459, 164465, 169645, 582295, 615569, 3077845, 4308983, 21544915]

約数ペア:

[(1, 21544915), (5, 4308983), (7, 3077845), (35, 615569), (37, 582295), (127, 169645), (131, 164465), (185, 116459), (259, 83185), (635, 33929), (655, 32893), (889, 24235), (917, 23495), (1295, 16637), (4445, 4847), (4585, 4699)]