20143904

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{643}}^1$

素因数の和:753

約数の個数: 48

約数和(自身を含む): 43817760

約数和(自身を除く): 23673856

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 89, 176, 178, 352, 356, 643, 712, 979, 1286, 1424, 1958, 2572, 2848, 3916, 5144, 7073, 7832, 10288, 14146, 15664, 20576, 28292, 31328, 56584, 57227, 113168, 114454, 226336, 228908, 457816, 629497, 915632, 1258994, 1831264, 2517988, 5035976, 10071952, 20143904]

約数ペア:

[(1, 20143904), (2, 10071952), (4, 5035976), (8, 2517988), (11, 1831264), (16, 1258994), (22, 915632), (32, 629497), (44, 457816), (88, 228908), (89, 226336), (176, 114454), (178, 113168), (352, 57227), (356, 56584), (643, 31328), (712, 28292), (979, 20576), (1286, 15664), (1424, 14146), (1958, 10288), (2572, 7832), (2848, 7073), (3916, 5144)]