21242551

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:175

約数の個数: 32

約数和(自身を含む): 26046720

約数和(自身を除く): 4804169

約数列:

[1, 11, 19, 37, 41, 67, 209, 407, 451, 703, 737, 779, 1273, 1517, 2479, 2747, 7733, 8569, 14003, 16687, 27269, 28823, 30217, 47101, 52193, 101639, 317053, 518111, 574123, 1118029, 1931141, 21242551]

約数ペア:

[(1, 21242551), (11, 1931141), (19, 1118029), (37, 574123), (41, 518111), (67, 317053), (209, 101639), (407, 52193), (451, 47101), (703, 30217), (737, 28823), (779, 27269), (1273, 16687), (1517, 14003), (2479, 8569), (2747, 7733)]