19995790

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{191}}^1$

素因数の和:265

約数の個数: 48

約数和(自身を含む): 39502080

約数和(自身を除く): 19506290

約数列:

[1, 2, 5, 10, 19, 29, 38, 58, 95, 145, 190, 191, 290, 361, 382, 551, 722, 955, 1102, 1805, 1910, 2755, 3610, 3629, 5510, 5539, 7258, 10469, 11078, 18145, 20938, 27695, 36290, 52345, 55390, 68951, 104690, 105241, 137902, 210482, 344755, 526205, 689510, 1052410, 1999579, 3999158, 9997895, 19995790]

約数ペア:

[(1, 19995790), (2, 9997895), (5, 3999158), (10, 1999579), (19, 1052410), (29, 689510), (38, 526205), (58, 344755), (95, 210482), (145, 137902), (190, 105241), (191, 104690), (290, 68951), (361, 55390), (382, 52345), (551, 36290), (722, 27695), (955, 20938), (1102, 18145), (1805, 11078), (1910, 10469), (2755, 7258), (3610, 5539), (3629, 5510)]