218022903

素因数分解:

$3^2\times 7^2\times {\mathrm{494383}}^1$

素因数の和:494403

約数の個数: 18

約数和(自身を含む): 366338544

約数和(自身を除く): 148315641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 494383, 1483149, 3460681, 4449447, 10382043, 24224767, 31146129, 72674301, 218022903]

約数ペア:

[(1, 218022903), (3, 72674301), (7, 31146129), (9, 24224767), (21, 10382043), (49, 4449447), (63, 3460681), (147, 1483149), (441, 494383)]