21045213

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{11519}}^1$

素因数の和:11561

約数の個数: 24

約数和(自身を含む): 35942400

約数和(自身を除く): 14897187

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 609, 1827, 11519, 34557, 80633, 103671, 241899, 334051, 725697, 1002153, 2338357, 3006459, 7015071, 21045213]

約数ペア:

[(1, 21045213), (3, 7015071), (7, 3006459), (9, 2338357), (21, 1002153), (29, 725697), (63, 334051), (87, 241899), (203, 103671), (261, 80633), (609, 34557), (1827, 11519)]