21917709

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1447}}^1$

素因数の和:1487

約数の個数: 40

約数和(自身を含む): 37844928

約数和(自身を除く): 15927219

約数列:

[1, 3, 9, 11, 17, 27, 33, 51, 81, 99, 153, 187, 297, 459, 561, 891, 1377, 1447, 1683, 4341, 5049, 13023, 15147, 15917, 24599, 39069, 47751, 73797, 117207, 143253, 221391, 270589, 429759, 664173, 811767, 1289277, 1992519, 2435301, 7305903, 21917709]

約数ペア:

[(1, 21917709), (3, 7305903), (9, 2435301), (11, 1992519), (17, 1289277), (27, 811767), (33, 664173), (51, 429759), (81, 270589), (99, 221391), (153, 143253), (187, 117207), (297, 73797), (459, 47751), (561, 39069), (891, 24599), (1377, 15917), (1447, 15147), (1683, 13023), (4341, 5049)]