19694540

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7517}}^1$

素因数の和:7657

約数の個数: 24

約数和(自身を含む): 41679792

約数和(自身を除く): 21985252

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 7517, 15034, 30068, 37585, 75170, 150340, 984727, 1969454, 3938908, 4923635, 9847270, 19694540]

約数ペア:

[(1, 19694540), (2, 9847270), (4, 4923635), (5, 3938908), (10, 1969454), (20, 984727), (131, 150340), (262, 75170), (524, 37585), (655, 30068), (1310, 15034), (2620, 7517)]