18997995

素因数分解:

$3^1\times 5^1\times {\mathrm{173}}^1\times {\mathrm{7321}}^1$

素因数の和:7502

約数の個数: 16

約数和(自身を含む): 30576672

約数和(自身を除く): 11578677

約数列:

[1, 3, 5, 15, 173, 519, 865, 2595, 7321, 21963, 36605, 109815, 1266533, 3799599, 6332665, 18997995]

約数ペア:

[(1, 18997995), (3, 6332665), (5, 3799599), (15, 1266533), (173, 109815), (519, 36605), (865, 21963), (2595, 7321)]