81735990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{389219}}^1$

素因数の和:389236

約数の個数: 32

約数和(自身を含む): 224190720

約数和(自身を除く): 142454730

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 389219, 778438, 1167657, 1946095, 2335314, 2724533, 3892190, 5449066, 5838285, 8173599, 11676570, 13622665, 16347198, 27245330, 40867995, 81735990]

約数ペア:

[(1, 81735990), (2, 40867995), (3, 27245330), (5, 16347198), (6, 13622665), (7, 11676570), (10, 8173599), (14, 5838285), (15, 5449066), (21, 3892190), (30, 2724533), (35, 2335314), (42, 1946095), (70, 1167657), (105, 778438), (210, 389219)]