20401563

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{74731}}^1$

素因数の和:74754

約数の個数: 16

約数和(自身を含む): 33479936

約数和(自身を除く): 13078373

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 74731, 224193, 523117, 971503, 1569351, 2914509, 6800521, 20401563]

約数ペア:

[(1, 20401563), (3, 6800521), (7, 2914509), (13, 1569351), (21, 971503), (39, 523117), (91, 224193), (273, 74731)]