21073744

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77477}}^1$

素因数の和:77502

約数の個数: 20

約数和(自身を含む): 43232724

約数和(自身を除く): 22158980

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77477, 154954, 309908, 619816, 1239632, 1317109, 2634218, 5268436, 10536872, 21073744]

約数ペア:

[(1, 21073744), (2, 10536872), (4, 5268436), (8, 2634218), (16, 1317109), (17, 1239632), (34, 619816), (68, 309908), (136, 154954), (272, 77477)]