21618080

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:270

約数の個数: 96

約数和(自身を含む): 56827008

約数和(自身を除く): 35208928

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 71, 80, 88, 110, 142, 160, 173, 176, 220, 284, 346, 352, 355, 440, 568, 692, 710, 781, 865, 880, 1136, 1384, 1420, 1562, 1730, 1760, 1903, 2272, 2768, 2840, 3124, 3460, 3806, 3905, 5536, 5680, 6248, 6920, 7612, 7810, 9515, 11360, 12283, 12496, 13840, 15224, 15620, 19030, 24566, 24992, 27680, 30448, 31240, 38060, 49132, 60896, 61415, 62480, 76120, 98264, 122830, 124960, 135113, 152240, 196528, 245660, 270226, 304480, 393056, 491320, 540452, 675565, 982640, 1080904, 1351130, 1965280, 2161808, 2702260, 4323616, 5404520, 10809040, 21618080]

約数ペア:

[(1, 21618080), (2, 10809040), (4, 5404520), (5, 4323616), (8, 2702260), (10, 2161808), (11, 1965280), (16, 1351130), (20, 1080904), (22, 982640), (32, 675565), (40, 540452), (44, 491320), (55, 393056), (71, 304480), (80, 270226), (88, 245660), (110, 196528), (142, 152240), (160, 135113), (173, 124960), (176, 122830), (220, 98264), (284, 76120), (346, 62480), (352, 61415), (355, 60896), (440, 49132), (568, 38060), (692, 31240), (710, 30448), (781, 27680), (865, 24992), (880, 24566), (1136, 19030), (1384, 15620), (1420, 15224), (1562, 13840), (1730, 12496), (1760, 12283), (1903, 11360), (2272, 9515), (2768, 7810), (2840, 7612), (3124, 6920), (3460, 6248), (3806, 5680), (3905, 5536)]