80921840

素因数分解:

$2^4\times 5^1\times {\mathrm{683}}^1\times {\mathrm{1481}}^1$

素因数の和:2177

約数の個数: 40

約数和(自身を含む): 188545968

約数和(自身を除く): 107624128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 683, 1366, 1481, 2732, 2962, 3415, 5464, 5924, 6830, 7405, 10928, 11848, 13660, 14810, 23696, 27320, 29620, 54640, 59240, 118480, 1011523, 2023046, 4046092, 5057615, 8092184, 10115230, 16184368, 20230460, 40460920, 80921840]

約数ペア:

[(1, 80921840), (2, 40460920), (4, 20230460), (5, 16184368), (8, 10115230), (10, 8092184), (16, 5057615), (20, 4046092), (40, 2023046), (80, 1011523), (683, 118480), (1366, 59240), (1481, 54640), (2732, 29620), (2962, 27320), (3415, 23696), (5464, 14810), (5924, 13660), (6830, 11848), (7405, 10928)]