81704960

素因数分解:

$2^{11}\times 5^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:207

約数の個数: 96

約数和(自身を含む): 200491200

約数和(自身を除く): 118786240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 101, 128, 158, 160, 202, 256, 316, 320, 395, 404, 505, 512, 632, 640, 790, 808, 1010, 1024, 1264, 1280, 1580, 1616, 2020, 2048, 2528, 2560, 3160, 3232, 4040, 5056, 5120, 6320, 6464, 7979, 8080, 10112, 10240, 12640, 12928, 15958, 16160, 20224, 25280, 25856, 31916, 32320, 39895, 40448, 50560, 51712, 63832, 64640, 79790, 80896, 101120, 103424, 127664, 129280, 159580, 161792, 202240, 206848, 255328, 258560, 319160, 404480, 510656, 517120, 638320, 808960, 1021312, 1034240, 1276640, 2042624, 2553280, 4085248, 5106560, 8170496, 10213120, 16340992, 20426240, 40852480, 81704960]

約数ペア:

[(1, 81704960), (2, 40852480), (4, 20426240), (5, 16340992), (8, 10213120), (10, 8170496), (16, 5106560), (20, 4085248), (32, 2553280), (40, 2042624), (64, 1276640), (79, 1034240), (80, 1021312), (101, 808960), (128, 638320), (158, 517120), (160, 510656), (202, 404480), (256, 319160), (316, 258560), (320, 255328), (395, 206848), (404, 202240), (505, 161792), (512, 159580), (632, 129280), (640, 127664), (790, 103424), (808, 101120), (1010, 80896), (1024, 79790), (1264, 64640), (1280, 63832), (1580, 51712), (1616, 50560), (2020, 40448), (2048, 39895), (2528, 32320), (2560, 31916), (3160, 25856), (3232, 25280), (4040, 20224), (5056, 16160), (5120, 15958), (6320, 12928), (6464, 12640), (7979, 10240), (8080, 10112)]