85207820

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1\times {\mathrm{271}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 182784000

約数和(自身を除く): 97576180

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 199, 271, 316, 395, 398, 542, 790, 796, 995, 1084, 1355, 1580, 1990, 2710, 3980, 5420, 15721, 21409, 31442, 42818, 53929, 62884, 78605, 85636, 107045, 107858, 157210, 214090, 215716, 269645, 314420, 428180, 539290, 1078580, 4260391, 8520782, 17041564, 21301955, 42603910, 85207820]

約数ペア:

[(1, 85207820), (2, 42603910), (4, 21301955), (5, 17041564), (10, 8520782), (20, 4260391), (79, 1078580), (158, 539290), (199, 428180), (271, 314420), (316, 269645), (395, 215716), (398, 214090), (542, 157210), (790, 107858), (796, 107045), (995, 85636), (1084, 78605), (1355, 62884), (1580, 53929), (1990, 42818), (2710, 31442), (3980, 21409), (5420, 15721)]