21355803

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{11689}}^1$

素因数の和:11731

約数の個数: 24

約数和(自身を含む): 36472800

約数和(自身を除く): 15116997

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 609, 1827, 11689, 35067, 81823, 105201, 245469, 338981, 736407, 1016943, 2372867, 3050829, 7118601, 21355803]

約数ペア:

[(1, 21355803), (3, 7118601), (7, 3050829), (9, 2372867), (21, 1016943), (29, 736407), (63, 338981), (87, 245469), (203, 105201), (261, 81823), (609, 35067), (1827, 11689)]