28951839

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^3\times {\mathrm{67}}^1$

素因数の和:137

約数の個数: 48

約数和(自身を含む): 51201280

約数和(自身を除く): 22249441

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 67, 133, 171, 201, 361, 399, 469, 603, 1083, 1197, 1273, 1407, 2527, 3249, 3819, 4221, 6859, 7581, 8911, 11457, 20577, 22743, 24187, 26733, 48013, 61731, 72561, 80199, 144039, 169309, 217683, 432117, 459553, 507927, 1378659, 1523781, 3216871, 4135977, 9650613, 28951839]

約数ペア:

[(1, 28951839), (3, 9650613), (7, 4135977), (9, 3216871), (19, 1523781), (21, 1378659), (57, 507927), (63, 459553), (67, 432117), (133, 217683), (171, 169309), (201, 144039), (361, 80199), (399, 72561), (469, 61731), (603, 48013), (1083, 26733), (1197, 24187), (1273, 22743), (1407, 20577), (2527, 11457), (3249, 8911), (3819, 7581), (4221, 6859)]