80816960

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{331}}^1$

素因数の和:464

約数の個数: 112

約数和(自身を含む): 222625920

約数和(自身を除く): 141808960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 109, 112, 140, 160, 218, 224, 280, 320, 331, 436, 448, 545, 560, 662, 763, 872, 1090, 1120, 1324, 1526, 1655, 1744, 2180, 2240, 2317, 2648, 3052, 3310, 3488, 3815, 4360, 4634, 5296, 6104, 6620, 6976, 7630, 8720, 9268, 10592, 11585, 12208, 13240, 15260, 17440, 18536, 21184, 23170, 24416, 26480, 30520, 34880, 36079, 37072, 46340, 48832, 52960, 61040, 72158, 74144, 92680, 105920, 122080, 144316, 148288, 180395, 185360, 244160, 252553, 288632, 360790, 370720, 505106, 577264, 721580, 741440, 1010212, 1154528, 1262765, 1443160, 2020424, 2309056, 2525530, 2886320, 4040848, 5051060, 5772640, 8081696, 10102120, 11545280, 16163392, 20204240, 40408480, 80816960]

約数ペア:

[(1, 80816960), (2, 40408480), (4, 20204240), (5, 16163392), (7, 11545280), (8, 10102120), (10, 8081696), (14, 5772640), (16, 5051060), (20, 4040848), (28, 2886320), (32, 2525530), (35, 2309056), (40, 2020424), (56, 1443160), (64, 1262765), (70, 1154528), (80, 1010212), (109, 741440), (112, 721580), (140, 577264), (160, 505106), (218, 370720), (224, 360790), (280, 288632), (320, 252553), (331, 244160), (436, 185360), (448, 180395), (545, 148288), (560, 144316), (662, 122080), (763, 105920), (872, 92680), (1090, 74144), (1120, 72158), (1324, 61040), (1526, 52960), (1655, 48832), (1744, 46340), (2180, 37072), (2240, 36079), (2317, 34880), (2648, 30520), (3052, 26480), (3310, 24416), (3488, 23170), (3815, 21184), (4360, 18536), (4634, 17440), (5296, 15260), (6104, 13240), (6620, 12208), (6976, 11585), (7630, 10592), (8720, 9268)]