28478457

素因数分解:

$3^2\times 7^2\times {\mathrm{64577}}^1$

素因数の和:64597

約数の個数: 18

約数和(自身を含む): 47852298

約数和(自身を除く): 19373841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 64577, 193731, 452039, 581193, 1356117, 3164273, 4068351, 9492819, 28478457]

約数ペア:

[(1, 28478457), (3, 9492819), (7, 4068351), (9, 3164273), (21, 1356117), (49, 581193), (63, 452039), (147, 193731), (441, 64577)]