209725906

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:307

約数の個数: 64

約数和(自身を含む): 374927616

約数和(自身を除く): 165201710

約数列:

[1, 2, 13, 17, 26, 34, 41, 71, 82, 142, 163, 221, 326, 442, 533, 697, 923, 1066, 1207, 1394, 1846, 2119, 2414, 2771, 2911, 4238, 5542, 5822, 6683, 9061, 11573, 13366, 15691, 18122, 23146, 31382, 36023, 37843, 49487, 72046, 75686, 86879, 98974, 113611, 150449, 173758, 196741, 227222, 300898, 393482, 474493, 643331, 948986, 1286662, 1476943, 2557633, 2953886, 5115266, 6168409, 8066381, 12336818, 16132762, 104862953, 209725906]

約数ペア:

[(1, 209725906), (2, 104862953), (13, 16132762), (17, 12336818), (26, 8066381), (34, 6168409), (41, 5115266), (71, 2953886), (82, 2557633), (142, 1476943), (163, 1286662), (221, 948986), (326, 643331), (442, 474493), (533, 393482), (697, 300898), (923, 227222), (1066, 196741), (1207, 173758), (1394, 150449), (1846, 113611), (2119, 98974), (2414, 86879), (2771, 75686), (2911, 72046), (4238, 49487), (5542, 37843), (5822, 36023), (6683, 31382), (9061, 23146), (11573, 18122), (13366, 15691)]