20527125

素因数分解:

$3^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:147

約数の個数: 64

約数和(自身を含む): 37340160

約数和(自身を除く): 16813035

約数列:

[1, 3, 5, 15, 19, 25, 43, 57, 67, 75, 95, 125, 129, 201, 215, 285, 335, 375, 475, 645, 817, 1005, 1075, 1273, 1425, 1675, 2375, 2451, 2881, 3225, 3819, 4085, 5025, 5375, 6365, 7125, 8375, 8643, 12255, 14405, 16125, 19095, 20425, 25125, 31825, 43215, 54739, 61275, 72025, 95475, 102125, 159125, 164217, 216075, 273695, 306375, 360125, 477375, 821085, 1080375, 1368475, 4105425, 6842375, 20527125]

約数ペア:

[(1, 20527125), (3, 6842375), (5, 4105425), (15, 1368475), (19, 1080375), (25, 821085), (43, 477375), (57, 360125), (67, 306375), (75, 273695), (95, 216075), (125, 164217), (129, 159125), (201, 102125), (215, 95475), (285, 72025), (335, 61275), (375, 54739), (475, 43215), (645, 31825), (817, 25125), (1005, 20425), (1075, 19095), (1273, 16125), (1425, 14405), (1675, 12255), (2375, 8643), (2451, 8375), (2881, 7125), (3225, 6365), (3819, 5375), (4085, 5025)]