81621603

素因数分解:

$3^2\times 7^2\times {\mathrm{59}}^1\times {\mathrm{3137}}^1$

素因数の和:3216

約数の個数: 36

約数和(自身を含む): 139515480

約数和(自身を除く): 57893877

約数列:

[1, 3, 7, 9, 21, 49, 59, 63, 147, 177, 413, 441, 531, 1239, 2891, 3137, 3717, 8673, 9411, 21959, 26019, 28233, 65877, 153713, 185083, 197631, 461139, 555249, 1295581, 1383417, 1665747, 3886743, 9069067, 11660229, 27207201, 81621603]

約数ペア:

[(1, 81621603), (3, 27207201), (7, 11660229), (9, 9069067), (21, 3886743), (49, 1665747), (59, 1383417), (63, 1295581), (147, 555249), (177, 461139), (413, 197631), (441, 185083), (531, 153713), (1239, 65877), (2891, 28233), (3137, 26019), (3717, 21959), (8673, 9411)]