20492368

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{1187}}^1$

素因数の和:1291

約数の個数: 40

約数和(自身を含む): 43309728

約数和(自身を除く): 22817360

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 83, 104, 166, 208, 332, 664, 1079, 1187, 1328, 2158, 2374, 4316, 4748, 8632, 9496, 15431, 17264, 18992, 30862, 61724, 98521, 123448, 197042, 246896, 394084, 788168, 1280773, 1576336, 2561546, 5123092, 10246184, 20492368]

約数ペア:

[(1, 20492368), (2, 10246184), (4, 5123092), (8, 2561546), (13, 1576336), (16, 1280773), (26, 788168), (52, 394084), (83, 246896), (104, 197042), (166, 123448), (208, 98521), (332, 61724), (664, 30862), (1079, 18992), (1187, 17264), (1328, 15431), (2158, 9496), (2374, 8632), (4316, 4748)]