80276720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{881}}^1$

素因数の和:978

約数の個数: 80

約数和(自身を含む): 200799648

約数和(自身を除く): 120522928

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 67, 68, 80, 85, 134, 136, 170, 268, 272, 335, 340, 536, 670, 680, 881, 1072, 1139, 1340, 1360, 1762, 2278, 2680, 3524, 4405, 4556, 5360, 5695, 7048, 8810, 9112, 11390, 14096, 14977, 17620, 18224, 22780, 29954, 35240, 45560, 59027, 59908, 70480, 74885, 91120, 118054, 119816, 149770, 236108, 239632, 295135, 299540, 472216, 590270, 599080, 944432, 1003459, 1180540, 1198160, 2006918, 2361080, 4013836, 4722160, 5017295, 8027672, 10034590, 16055344, 20069180, 40138360, 80276720]

約数ペア:

[(1, 80276720), (2, 40138360), (4, 20069180), (5, 16055344), (8, 10034590), (10, 8027672), (16, 5017295), (17, 4722160), (20, 4013836), (34, 2361080), (40, 2006918), (67, 1198160), (68, 1180540), (80, 1003459), (85, 944432), (134, 599080), (136, 590270), (170, 472216), (268, 299540), (272, 295135), (335, 239632), (340, 236108), (536, 149770), (670, 119816), (680, 118054), (881, 91120), (1072, 74885), (1139, 70480), (1340, 59908), (1360, 59027), (1762, 45560), (2278, 35240), (2680, 29954), (3524, 22780), (4405, 18224), (4556, 17620), (5360, 14977), (5695, 14096), (7048, 11390), (8810, 9112)]