20890570

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{431}}^1$

素因数の和:606

約数の個数: 32

約数和(自身を含む): 39004416

約数和(自身を除く): 18113846

約数列:

[1, 2, 5, 10, 37, 74, 131, 185, 262, 370, 431, 655, 862, 1310, 2155, 4310, 4847, 9694, 15947, 24235, 31894, 48470, 56461, 79735, 112922, 159470, 282305, 564610, 2089057, 4178114, 10445285, 20890570]

約数ペア:

[(1, 20890570), (2, 10445285), (5, 4178114), (10, 2089057), (37, 564610), (74, 282305), (131, 159470), (185, 112922), (262, 79735), (370, 56461), (431, 48470), (655, 31894), (862, 24235), (1310, 15947), (2155, 9694), (4310, 4847)]