66251440

素因数分解:

$2^4\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1627}}^1$

素因数の和:2149

約数の個数: 40

約数和(自身を含む): 154432080

約数和(自身を除く): 88180640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 509, 1018, 1627, 2036, 2545, 3254, 4072, 5090, 6508, 8135, 8144, 10180, 13016, 16270, 20360, 26032, 32540, 40720, 65080, 130160, 828143, 1656286, 3312572, 4140715, 6625144, 8281430, 13250288, 16562860, 33125720, 66251440]

約数ペア:

[(1, 66251440), (2, 33125720), (4, 16562860), (5, 13250288), (8, 8281430), (10, 6625144), (16, 4140715), (20, 3312572), (40, 1656286), (80, 828143), (509, 130160), (1018, 65080), (1627, 40720), (2036, 32540), (2545, 26032), (3254, 20360), (4072, 16270), (5090, 13016), (6508, 10180), (8135, 8144)]