20859381

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{229}}^1\times {\mathrm{349}}^1$

素因数の和:613

約数の個数: 24

約数和(自身を含む): 31395000

約数和(自身を除く): 10535619

約数列:

[1, 3, 9, 29, 87, 229, 261, 349, 687, 1047, 2061, 3141, 6641, 10121, 19923, 30363, 59769, 79921, 91089, 239763, 719289, 2317709, 6953127, 20859381]

約数ペア:

[(1, 20859381), (3, 6953127), (9, 2317709), (29, 719289), (87, 239763), (229, 91089), (261, 79921), (349, 59769), (687, 30363), (1047, 19923), (2061, 10121), (3141, 6641)]