21365944

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{853}}^1$

素因数の和:991

約数の個数: 32

約数和(自身を含む): 41811840

約数和(自身を除く): 20445896

約数列:

[1, 2, 4, 8, 31, 62, 101, 124, 202, 248, 404, 808, 853, 1706, 3131, 3412, 6262, 6824, 12524, 25048, 26443, 52886, 86153, 105772, 172306, 211544, 344612, 689224, 2670743, 5341486, 10682972, 21365944]

約数ペア:

[(1, 21365944), (2, 10682972), (4, 5341486), (8, 2670743), (31, 689224), (62, 344612), (101, 211544), (124, 172306), (202, 105772), (248, 86153), (404, 52886), (808, 26443), (853, 25048), (1706, 12524), (3131, 6824), (3412, 6262)]