21397299

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{439}}^1$

素因数の和:671

約数の個数: 32

約数和(自身を含む): 35819520

約数和(自身を除く): 14422221

約数列:

[1, 3, 7, 11, 21, 33, 77, 211, 231, 439, 633, 1317, 1477, 2321, 3073, 4431, 4829, 6963, 9219, 14487, 16247, 33803, 48741, 92629, 101409, 277887, 648403, 1018919, 1945209, 3056757, 7132433, 21397299]

約数ペア:

[(1, 21397299), (3, 7132433), (7, 3056757), (11, 1945209), (21, 1018919), (33, 648403), (77, 277887), (211, 101409), (231, 92629), (439, 48741), (633, 33803), (1317, 16247), (1477, 14487), (2321, 9219), (3073, 6963), (4431, 4829)]