81669950

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{39839}}^1$

素因数の和:39892

約数の個数: 24

約数和(自身を含む): 155615040

約数和(自身を除く): 73945090

約数列:

[1, 2, 5, 10, 25, 41, 50, 82, 205, 410, 1025, 2050, 39839, 79678, 199195, 398390, 995975, 1633399, 1991950, 3266798, 8166995, 16333990, 40834975, 81669950]

約数ペア:

[(1, 81669950), (2, 40834975), (5, 16333990), (10, 8166995), (25, 3266798), (41, 1991950), (50, 1633399), (82, 995975), (205, 398390), (410, 199195), (1025, 79678), (2050, 39839)]