81032920

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{27751}}^1$

素因数の和:27835

約数の個数: 32

約数和(自身を含む): 184828320

約数和(自身を除く): 103795400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 27751, 55502, 111004, 138755, 222008, 277510, 555020, 1110040, 2025823, 4051646, 8103292, 10129115, 16206584, 20258230, 40516460, 81032920]

約数ペア:

[(1, 81032920), (2, 40516460), (4, 20258230), (5, 16206584), (8, 10129115), (10, 8103292), (20, 4051646), (40, 2025823), (73, 1110040), (146, 555020), (292, 277510), (365, 222008), (584, 138755), (730, 111004), (1460, 55502), (2920, 27751)]