20939074

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{313}}^1$

素因数の和:442

約数の個数: 32

約数和(自身を含む): 35449344

約数和(自身を除く): 14510270

約数列:

[1, 2, 13, 26, 31, 62, 83, 166, 313, 403, 626, 806, 1079, 2158, 2573, 4069, 5146, 8138, 9703, 19406, 25979, 33449, 51958, 66898, 126139, 252278, 337727, 675454, 805349, 1610698, 10469537, 20939074]

約数ペア:

[(1, 20939074), (2, 10469537), (13, 1610698), (26, 805349), (31, 675454), (62, 337727), (83, 252278), (166, 126139), (313, 66898), (403, 51958), (626, 33449), (806, 25979), (1079, 19406), (2158, 9703), (2573, 8138), (4069, 5146)]