20384080

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{3803}}^1$

素因数の和:3883

約数の個数: 40

約数和(自身を含む): 48112992

約数和(自身を除く): 27728912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 3803, 5360, 7606, 15212, 19015, 30424, 38030, 60848, 76060, 152120, 254801, 304240, 509602, 1019204, 1274005, 2038408, 2548010, 4076816, 5096020, 10192040, 20384080]

約数ペア:

[(1, 20384080), (2, 10192040), (4, 5096020), (5, 4076816), (8, 2548010), (10, 2038408), (16, 1274005), (20, 1019204), (40, 509602), (67, 304240), (80, 254801), (134, 152120), (268, 76060), (335, 60848), (536, 38030), (670, 30424), (1072, 19015), (1340, 15212), (2680, 7606), (3803, 5360)]