81009560

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{27743}}^1$

素因数の和:27827

約数の個数: 32

約数和(自身を含む): 184775040

約数和(自身を除く): 103765480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 27743, 55486, 110972, 138715, 221944, 277430, 554860, 1109720, 2025239, 4050478, 8100956, 10126195, 16201912, 20252390, 40504780, 81009560]

約数ペア:

[(1, 81009560), (2, 40504780), (4, 20252390), (5, 16201912), (8, 10126195), (10, 8100956), (20, 4050478), (40, 2025239), (73, 1109720), (146, 554860), (292, 277430), (365, 221944), (584, 138715), (730, 110972), (1460, 55486), (2920, 27743)]