87984080

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{2689}}^1$

素因数の和:3111

約数の個数: 40

約数和(自身を含む): 205139400

約数和(自身を除く): 117155320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 818, 1636, 2045, 2689, 3272, 4090, 5378, 6544, 8180, 10756, 13445, 16360, 21512, 26890, 32720, 43024, 53780, 107560, 215120, 1099801, 2199602, 4399204, 5499005, 8798408, 10998010, 17596816, 21996020, 43992040, 87984080]

約数ペア:

[(1, 87984080), (2, 43992040), (4, 21996020), (5, 17596816), (8, 10998010), (10, 8798408), (16, 5499005), (20, 4399204), (40, 2199602), (80, 1099801), (409, 215120), (818, 107560), (1636, 53780), (2045, 43024), (2689, 32720), (3272, 26890), (4090, 21512), (5378, 16360), (6544, 13445), (8180, 10756)]