28211409

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{797}}^1$

素因数の和:851

約数の個数: 40

約数和(自身を含む): 46347840

約数和(自身を除く): 18136431

約数列:

[1, 3, 9, 19, 23, 27, 57, 69, 81, 171, 207, 437, 513, 621, 797, 1311, 1539, 1863, 2391, 3933, 7173, 11799, 15143, 18331, 21519, 35397, 45429, 54993, 64557, 136287, 164979, 348289, 408861, 494937, 1044867, 1226583, 1484811, 3134601, 9403803, 28211409]

約数ペア:

[(1, 28211409), (3, 9403803), (9, 3134601), (19, 1484811), (23, 1226583), (27, 1044867), (57, 494937), (69, 408861), (81, 348289), (171, 164979), (207, 136287), (437, 64557), (513, 54993), (621, 45429), (797, 35397), (1311, 21519), (1539, 18331), (1863, 15143), (2391, 11799), (3933, 7173)]