28676403

素因数分解:

$3^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2137}}^1$

素因数の和:2224

約数の個数: 32

約数和(自身を含む): 49259520

約数和(自身を除く): 20583117

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 189, 213, 497, 639, 1491, 1917, 2137, 4473, 6411, 13419, 14959, 19233, 44877, 57699, 134631, 151727, 403893, 455181, 1062089, 1365543, 3186267, 4096629, 9558801, 28676403]

約数ペア:

[(1, 28676403), (3, 9558801), (7, 4096629), (9, 3186267), (21, 1365543), (27, 1062089), (63, 455181), (71, 403893), (189, 151727), (213, 134631), (497, 57699), (639, 44877), (1491, 19233), (1917, 14959), (2137, 13419), (4473, 6411)]