21224835

素因数分解:

$3^8\times 5^1\times {\mathrm{647}}^1$

素因数の和:676

約数の個数: 36

約数和(自身を含む): 38261808

約数和(自身を除く): 17036973

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 647, 729, 1215, 1941, 2187, 3235, 3645, 5823, 6561, 9705, 10935, 17469, 29115, 32805, 52407, 87345, 157221, 262035, 471663, 786105, 1414989, 2358315, 4244967, 7074945, 21224835]

約数ペア:

[(1, 21224835), (3, 7074945), (5, 4244967), (9, 2358315), (15, 1414989), (27, 786105), (45, 471663), (81, 262035), (135, 157221), (243, 87345), (405, 52407), (647, 32805), (729, 29115), (1215, 17469), (1941, 10935), (2187, 9705), (3235, 6561), (3645, 5823)]