257990512

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{673}}^1$

素因数の和:810

約数の個数: 80

約数和(自身を含む): 573331360

約数和(自身を除く): 315340848

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 97, 104, 152, 194, 208, 247, 304, 388, 494, 673, 776, 988, 1261, 1346, 1552, 1843, 1976, 2522, 2692, 3686, 3952, 5044, 5384, 7372, 8749, 10088, 10768, 12787, 14744, 17498, 20176, 23959, 25574, 29488, 34996, 47918, 51148, 65281, 69992, 95836, 102296, 130562, 139984, 166231, 191672, 204592, 261124, 332462, 383344, 522248, 664924, 848653, 1044496, 1240339, 1329848, 1697306, 2480678, 2659696, 3394612, 4961356, 6789224, 9922712, 13578448, 16124407, 19845424, 32248814, 64497628, 128995256, 257990512]

約数ペア:

[(1, 257990512), (2, 128995256), (4, 64497628), (8, 32248814), (13, 19845424), (16, 16124407), (19, 13578448), (26, 9922712), (38, 6789224), (52, 4961356), (76, 3394612), (97, 2659696), (104, 2480678), (152, 1697306), (194, 1329848), (208, 1240339), (247, 1044496), (304, 848653), (388, 664924), (494, 522248), (673, 383344), (776, 332462), (988, 261124), (1261, 204592), (1346, 191672), (1552, 166231), (1843, 139984), (1976, 130562), (2522, 102296), (2692, 95836), (3686, 69992), (3952, 65281), (5044, 51148), (5384, 47918), (7372, 34996), (8749, 29488), (10088, 25574), (10768, 23959), (12787, 20176), (14744, 17498)]