28503279

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:201

約数の個数: 64

約数和(自身を含む): 51609600

約数和(自身を除く): 23106321

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 69, 79, 83, 161, 189, 207, 237, 249, 483, 553, 581, 621, 711, 747, 1449, 1659, 1743, 1817, 1909, 2133, 2241, 4347, 4977, 5229, 5451, 5727, 6557, 12719, 13363, 14931, 15687, 16353, 17181, 19671, 38157, 40089, 45899, 49059, 51543, 59013, 114471, 120267, 137697, 150811, 177039, 343413, 360801, 413091, 452433, 1055677, 1239273, 1357299, 3167031, 4071897, 9501093, 28503279]

約数ペア:

[(1, 28503279), (3, 9501093), (7, 4071897), (9, 3167031), (21, 1357299), (23, 1239273), (27, 1055677), (63, 452433), (69, 413091), (79, 360801), (83, 343413), (161, 177039), (189, 150811), (207, 137697), (237, 120267), (249, 114471), (483, 59013), (553, 51543), (581, 49059), (621, 45899), (711, 40089), (747, 38157), (1449, 19671), (1659, 17181), (1743, 16353), (1817, 15687), (1909, 14931), (2133, 13363), (2241, 12719), (4347, 6557), (4977, 5727), (5229, 5451)]