20220871280

素因数分解:

$2^4\times 5^1\times {\mathrm{7901}}^1\times {\mathrm{31991}}^1$

素因数の和:39905

約数の個数: 40

約数和(自身を含む): 47020945824

約数和(自身を除く): 26800074544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 7901, 15802, 31604, 31991, 39505, 63208, 63982, 79010, 126416, 127964, 158020, 159955, 255928, 316040, 319910, 511856, 632080, 639820, 1279640, 2559280, 252760891, 505521782, 1011043564, 1263804455, 2022087128, 2527608910, 4044174256, 5055217820, 10110435640, 20220871280]

約数ペア:

[(1, 20220871280), (2, 10110435640), (4, 5055217820), (5, 4044174256), (8, 2527608910), (10, 2022087128), (16, 1263804455), (20, 1011043564), (40, 505521782), (80, 252760891), (7901, 2559280), (15802, 1279640), (31604, 639820), (31991, 632080), (39505, 511856), (63208, 319910), (63982, 316040), (79010, 255928), (126416, 159955), (127964, 158020)]