40013870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{9929}}^1$

素因数の和:9980

約数の個数: 32

約数和(自身を含む): 80075520

約数和(自身を除く): 40061650

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 9929, 19858, 49645, 99290, 129077, 258154, 307799, 615598, 645385, 1290770, 1538995, 3077990, 4001387, 8002774, 20006935, 40013870]

約数ペア:

[(1, 40013870), (2, 20006935), (5, 8002774), (10, 4001387), (13, 3077990), (26, 1538995), (31, 1290770), (62, 645385), (65, 615598), (130, 307799), (155, 258154), (310, 129077), (403, 99290), (806, 49645), (2015, 19858), (4030, 9929)]