21266735

素因数分解:

$5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{1423}}^1$

素因数の和:1503

約数の個数: 24

約数和(自身を含む): 30194496

約数和(自身を除く): 8927761

約数列:

[1, 5, 7, 35, 49, 61, 245, 305, 427, 1423, 2135, 2989, 7115, 9961, 14945, 49805, 69727, 86803, 348635, 434015, 607621, 3038105, 4253347, 21266735]

約数ペア:

[(1, 21266735), (5, 4253347), (7, 3038105), (35, 607621), (49, 434015), (61, 348635), (245, 86803), (305, 69727), (427, 49805), (1423, 14945), (2135, 9961), (2989, 7115)]