64296880

素因数分解:

$2^4\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1579}}^1$

素因数の和:2101

約数の個数: 40

約数和(自身を含む): 149878800

約数和(自身を除く): 85581920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 509, 1018, 1579, 2036, 2545, 3158, 4072, 5090, 6316, 7895, 8144, 10180, 12632, 15790, 20360, 25264, 31580, 40720, 63160, 126320, 803711, 1607422, 3214844, 4018555, 6429688, 8037110, 12859376, 16074220, 32148440, 64296880]

約数ペア:

[(1, 64296880), (2, 32148440), (4, 16074220), (5, 12859376), (8, 8037110), (10, 6429688), (16, 4018555), (20, 3214844), (40, 1607422), (80, 803711), (509, 126320), (1018, 63160), (1579, 40720), (2036, 31580), (2545, 25264), (3158, 20360), (4072, 15790), (5090, 12632), (6316, 10180), (7895, 8144)]