19915491760

素因数分解:

$2^4\times 5^1\times {\mathrm{761}}^1\times {\mathrm{327127}}^1$

素因数の和:327901

約数の個数: 40

約数和(自身を含む): 46364505696

約数和(自身を除く): 26449013936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 761, 1522, 3044, 3805, 6088, 7610, 12176, 15220, 30440, 60880, 327127, 654254, 1308508, 1635635, 2617016, 3271270, 5234032, 6542540, 13085080, 26170160, 248943647, 497887294, 995774588, 1244718235, 1991549176, 2489436470, 3983098352, 4978872940, 9957745880, 19915491760]

約数ペア:

[(1, 19915491760), (2, 9957745880), (4, 4978872940), (5, 3983098352), (8, 2489436470), (10, 1991549176), (16, 1244718235), (20, 995774588), (40, 497887294), (80, 248943647), (761, 26170160), (1522, 13085080), (3044, 6542540), (3805, 5234032), (6088, 3271270), (7610, 2617016), (12176, 1635635), (15220, 1308508), (30440, 654254), (60880, 327127)]