21111678

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{18617}}^1$

素因数の和:18638

約数の個数: 40

約数和(自身を含む): 54066672

約数和(自身を除く): 32954994

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 126, 162, 189, 378, 567, 1134, 18617, 37234, 55851, 111702, 130319, 167553, 260638, 335106, 390957, 502659, 781914, 1005318, 1172871, 1507977, 2345742, 3015954, 3518613, 7037226, 10555839, 21111678]

約数ペア:

[(1, 21111678), (2, 10555839), (3, 7037226), (6, 3518613), (7, 3015954), (9, 2345742), (14, 1507977), (18, 1172871), (21, 1005318), (27, 781914), (42, 502659), (54, 390957), (63, 335106), (81, 260638), (126, 167553), (162, 130319), (189, 111702), (378, 55851), (567, 37234), (1134, 18617)]