19965225

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2237}}^1$

素因数の和:2274

約数の個数: 48

約数和(自身を含む): 39961728

約数和(自身を除く): 19996503

約数列:

[1, 3, 5, 7, 15, 17, 21, 25, 35, 51, 75, 85, 105, 119, 175, 255, 357, 425, 525, 595, 1275, 1785, 2237, 2975, 6711, 8925, 11185, 15659, 33555, 38029, 46977, 55925, 78295, 114087, 167775, 190145, 234885, 266203, 391475, 570435, 798609, 950725, 1174425, 1331015, 2852175, 3993045, 6655075, 19965225]

約数ペア:

[(1, 19965225), (3, 6655075), (5, 3993045), (7, 2852175), (15, 1331015), (17, 1174425), (21, 950725), (25, 798609), (35, 570435), (51, 391475), (75, 266203), (85, 234885), (105, 190145), (119, 167775), (175, 114087), (255, 78295), (357, 55925), (425, 46977), (525, 38029), (595, 33555), (1275, 15659), (1785, 11185), (2237, 8925), (2975, 6711)]