21238821

素因数分解:

$3^3\times {\mathrm{23}}^2\times {\mathrm{1487}}^1$

素因数の和:1542

約数の個数: 24

約数和(自身を含む): 32914560

約数和(自身を除く): 11675739

約数列:

[1, 3, 9, 23, 27, 69, 207, 529, 621, 1487, 1587, 4461, 4761, 13383, 14283, 34201, 40149, 102603, 307809, 786623, 923427, 2359869, 7079607, 21238821]

約数ペア:

[(1, 21238821), (3, 7079607), (9, 2359869), (23, 923427), (27, 786623), (69, 307809), (207, 102603), (529, 40149), (621, 34201), (1487, 14283), (1587, 13383), (4461, 4761)]