20864080450

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{49789}}^1$

素因数の和:49864

約数の個数: 72

約数和(自身を含む): 42646628700

約数和(自身を除く): 21782548250

約数列:

[1, 2, 5, 10, 17, 25, 29, 34, 50, 58, 85, 145, 170, 289, 290, 425, 493, 578, 725, 850, 986, 1445, 1450, 2465, 2890, 4930, 7225, 8381, 12325, 14450, 16762, 24650, 41905, 49789, 83810, 99578, 209525, 248945, 419050, 497890, 846413, 1244725, 1443881, 1692826, 2489450, 2887762, 4232065, 7219405, 8464130, 14389021, 14438810, 21160325, 24545977, 28778042, 36097025, 42320650, 49091954, 71945105, 72194050, 122729885, 143890210, 245459770, 359725525, 417281609, 613649425, 719451050, 834563218, 1227298850, 2086408045, 4172816090, 10432040225, 20864080450]

約数ペア:

[(1, 20864080450), (2, 10432040225), (5, 4172816090), (10, 2086408045), (17, 1227298850), (25, 834563218), (29, 719451050), (34, 613649425), (50, 417281609), (58, 359725525), (85, 245459770), (145, 143890210), (170, 122729885), (289, 72194050), (290, 71945105), (425, 49091954), (493, 42320650), (578, 36097025), (725, 28778042), (850, 24545977), (986, 21160325), (1445, 14438810), (1450, 14389021), (2465, 8464130), (2890, 7219405), (4930, 4232065), (7225, 2887762), (8381, 2489450), (12325, 1692826), (14450, 1443881), (16762, 1244725), (24650, 846413), (41905, 497890), (49789, 419050), (83810, 248945), (99578, 209525)]