21339556

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{353}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 45674496

約数和(自身を除く): 24334940

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 127, 238, 254, 353, 476, 508, 706, 889, 1412, 1778, 2159, 2471, 3556, 4318, 4942, 6001, 8636, 9884, 12002, 15113, 24004, 30226, 42007, 44831, 60452, 84014, 89662, 168028, 179324, 313817, 627634, 762127, 1255268, 1524254, 3048508, 5334889, 10669778, 21339556]

約数ペア:

[(1, 21339556), (2, 10669778), (4, 5334889), (7, 3048508), (14, 1524254), (17, 1255268), (28, 762127), (34, 627634), (68, 313817), (119, 179324), (127, 168028), (238, 89662), (254, 84014), (353, 60452), (476, 44831), (508, 42007), (706, 30226), (889, 24004), (1412, 15113), (1778, 12002), (2159, 9884), (2471, 8636), (3556, 6001), (4318, 4942)]