20721930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{311}}^1\times {\mathrm{2221}}^1$

素因数の和:2542

約数の個数: 32

約数和(自身を含む): 49915008

約数和(自身を除く): 29193078

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 311, 622, 933, 1555, 1866, 2221, 3110, 4442, 4665, 6663, 9330, 11105, 13326, 22210, 33315, 66630, 690731, 1381462, 2072193, 3453655, 4144386, 6907310, 10360965, 20721930]

約数ペア:

[(1, 20721930), (2, 10360965), (3, 6907310), (5, 4144386), (6, 3453655), (10, 2072193), (15, 1381462), (30, 690731), (311, 66630), (622, 33315), (933, 22210), (1555, 13326), (1866, 11105), (2221, 9330), (3110, 6663), (4442, 4665)]