21565323

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 36036000

約数和(自身を除く): 14470677

約数列:

[1, 3, 9, 13, 19, 39, 57, 89, 109, 117, 171, 247, 267, 327, 741, 801, 981, 1157, 1417, 1691, 2071, 2223, 3471, 4251, 5073, 6213, 9701, 10413, 12753, 15219, 18639, 21983, 26923, 29103, 65949, 80769, 87309, 126113, 184319, 197847, 242307, 378339, 552957, 1135017, 1658871, 2396147, 7188441, 21565323]

約数ペア:

[(1, 21565323), (3, 7188441), (9, 2396147), (13, 1658871), (19, 1135017), (39, 552957), (57, 378339), (89, 242307), (109, 197847), (117, 184319), (171, 126113), (247, 87309), (267, 80769), (327, 65949), (741, 29103), (801, 26923), (981, 21983), (1157, 18639), (1417, 15219), (1691, 12753), (2071, 10413), (2223, 9701), (3471, 6213), (4251, 5073)]