21000974397

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{857}}^1\times {\mathrm{20269}}^1$

素因数の和:21173

約数の個数: 32

約数和(自身を含む): 31165854720

約数和(自身を除く): 10164880323

約数列:

[1, 3, 13, 31, 39, 93, 403, 857, 1209, 2571, 11141, 20269, 26567, 33423, 60807, 79701, 263497, 345371, 628339, 790491, 1036113, 1885017, 8168407, 17370533, 24505221, 52111599, 225816929, 538486523, 677450787, 1615459569, 7000324799, 21000974397]

約数ペア:

[(1, 21000974397), (3, 7000324799), (13, 1615459569), (31, 677450787), (39, 538486523), (93, 225816929), (403, 52111599), (857, 24505221), (1209, 17370533), (2571, 8168407), (11141, 1885017), (20269, 1036113), (26567, 790491), (33423, 628339), (60807, 345371), (79701, 263497)]