90172990

素因数分解:

$2^1\times 5^1\times {\mathrm{419}}^1\times {\mathrm{21521}}^1$

素因数の和:21947

約数の個数: 16

約数和(自身を含む): 162706320

約数和(自身を除く): 72533330

約数列:

[1, 2, 5, 10, 419, 838, 2095, 4190, 21521, 43042, 107605, 215210, 9017299, 18034598, 45086495, 90172990]

約数ペア:

[(1, 90172990), (2, 45086495), (5, 18034598), (10, 9017299), (419, 215210), (838, 107605), (2095, 43042), (4190, 21521)]