20533820

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{16831}}^1$

素因数の和:16901

約数の個数: 24

約数和(自身を含む): 43830528

約数和(自身を除く): 23296708

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 16831, 33662, 67324, 84155, 168310, 336620, 1026691, 2053382, 4106764, 5133455, 10266910, 20533820]

約数ペア:

[(1, 20533820), (2, 10266910), (4, 5133455), (5, 4106764), (10, 2053382), (20, 1026691), (61, 336620), (122, 168310), (244, 84155), (305, 67324), (610, 33662), (1220, 16831)]