28456813

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{367}}^1$

素因数の和:457

約数の個数: 32

約数和(自身を含む): 38154240

約数和(自身を除く): 9697427

約数列:

[1, 7, 11, 19, 53, 77, 133, 209, 367, 371, 583, 1007, 1463, 2569, 4037, 4081, 6973, 7049, 11077, 19451, 28259, 48811, 76703, 77539, 136157, 213961, 369569, 536921, 1497727, 2586983, 4065259, 28456813]

約数ペア:

[(1, 28456813), (7, 4065259), (11, 2586983), (19, 1497727), (53, 536921), (77, 369569), (133, 213961), (209, 136157), (367, 77539), (371, 76703), (583, 48811), (1007, 28259), (1463, 19451), (2569, 11077), (4037, 7049), (4081, 6973)]