19948784

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{311}}^1$

素因数の和:549

約数の個数: 40

約数和(自身を含む): 41009280

約数和(自身を除く): 21060496

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 211, 304, 311, 422, 622, 844, 1244, 1688, 2488, 3376, 4009, 4976, 5909, 8018, 11818, 16036, 23636, 32072, 47272, 64144, 65621, 94544, 131242, 262484, 524968, 1049936, 1246799, 2493598, 4987196, 9974392, 19948784]

約数ペア:

[(1, 19948784), (2, 9974392), (4, 4987196), (8, 2493598), (16, 1246799), (19, 1049936), (38, 524968), (76, 262484), (152, 131242), (211, 94544), (304, 65621), (311, 64144), (422, 47272), (622, 32072), (844, 23636), (1244, 16036), (1688, 11818), (2488, 8018), (3376, 5909), (4009, 4976)]