280917

素因数分解:

$3^2\times 7^4\times {\mathrm{13}}^1$

素因数の和:47

約数の個数: 30

約数和(自身を含む): 509782

約数和(自身を除く): 228865

約数列:

[1, 3, 7, 9, 13, 21, 39, 49, 63, 91, 117, 147, 273, 343, 441, 637, 819, 1029, 1911, 2401, 3087, 4459, 5733, 7203, 13377, 21609, 31213, 40131, 93639, 280917]

約数ペア:

[(1, 280917), (3, 93639), (7, 40131), (9, 31213), (13, 21609), (21, 13377), (39, 7203), (49, 5733), (63, 4459), (91, 3087), (117, 2401), (147, 1911), (273, 1029), (343, 819), (441, 637)]