19991488

素因数分解:

$2^6\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{389}}^1$

素因数の和:485

約数の個数: 56

約数和(自身を含む): 43982640

約数和(自身を除く): 23991152

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 73, 88, 146, 176, 292, 352, 389, 584, 704, 778, 803, 1168, 1556, 1606, 2336, 3112, 3212, 4279, 4672, 6224, 6424, 8558, 12448, 12848, 17116, 24896, 25696, 28397, 34232, 51392, 56794, 68464, 113588, 136928, 227176, 273856, 312367, 454352, 624734, 908704, 1249468, 1817408, 2498936, 4997872, 9995744, 19991488]

約数ペア:

[(1, 19991488), (2, 9995744), (4, 4997872), (8, 2498936), (11, 1817408), (16, 1249468), (22, 908704), (32, 624734), (44, 454352), (64, 312367), (73, 273856), (88, 227176), (146, 136928), (176, 113588), (292, 68464), (352, 56794), (389, 51392), (584, 34232), (704, 28397), (778, 25696), (803, 24896), (1168, 17116), (1556, 12848), (1606, 12448), (2336, 8558), (3112, 6424), (3212, 6224), (4279, 4672)]