21085911

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{30427}}^1$

素因数の和:30451

約数の個数: 24

約数和(自身を含む): 37974144

約数和(自身を除く): 16888233

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 30427, 91281, 212989, 273843, 334697, 638967, 1004091, 1916901, 2342879, 3012273, 7028637, 21085911]

約数ペア:

[(1, 21085911), (3, 7028637), (7, 3012273), (9, 2342879), (11, 1916901), (21, 1004091), (33, 638967), (63, 334697), (77, 273843), (99, 212989), (231, 91281), (693, 30427)]