21276730

素因数分解:

$2^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{15307}}^1$

素因数の和:15453

約数の個数: 16

約数和(自身を含む): 38576160

約数和(自身を除く): 17299430

約数列:

[1, 2, 5, 10, 139, 278, 695, 1390, 15307, 30614, 76535, 153070, 2127673, 4255346, 10638365, 21276730]

約数ペア:

[(1, 21276730), (2, 10638365), (5, 4255346), (10, 2127673), (139, 153070), (278, 76535), (695, 30614), (1390, 15307)]