21756154

素因数分解:

$2^1\times 7^1\times {\mathrm{661}}^1\times {\mathrm{2351}}^1$

素因数の和:3021

約数の個数: 16

約数和(自身を含む): 37368576

約数和(自身を除く): 15612422

約数列:

[1, 2, 7, 14, 661, 1322, 2351, 4627, 4702, 9254, 16457, 32914, 1554011, 3108022, 10878077, 21756154]

約数ペア:

[(1, 21756154), (2, 10878077), (7, 3108022), (14, 1554011), (661, 32914), (1322, 16457), (2351, 9254), (4627, 4702)]