21224273

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{227}}^1$

素因数の和:309

約数の個数: 24

約数和(自身を含む): 26407872

約数和(自身を除く): 5183599

約数列:

[1, 7, 19, 37, 133, 227, 259, 361, 703, 1589, 2527, 4313, 4921, 8399, 13357, 30191, 58793, 81947, 93499, 159581, 573629, 1117067, 3032039, 21224273]

約数ペア:

[(1, 21224273), (7, 3032039), (19, 1117067), (37, 573629), (133, 159581), (227, 93499), (259, 81947), (361, 58793), (703, 30191), (1589, 13357), (2527, 8399), (4313, 4921)]