20651456

素因数分解:

$2^6\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1487}}^1$

素因数の和:1537

約数の個数: 56

約数和(自身を含む): 48377856

約数和(自身を除く): 27726400

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 217, 224, 248, 434, 448, 496, 868, 992, 1487, 1736, 1984, 2974, 3472, 5948, 6944, 10409, 11896, 13888, 20818, 23792, 41636, 46097, 47584, 83272, 92194, 95168, 166544, 184388, 322679, 333088, 368776, 645358, 666176, 737552, 1290716, 1475104, 2581432, 2950208, 5162864, 10325728, 20651456]

約数ペア:

[(1, 20651456), (2, 10325728), (4, 5162864), (7, 2950208), (8, 2581432), (14, 1475104), (16, 1290716), (28, 737552), (31, 666176), (32, 645358), (56, 368776), (62, 333088), (64, 322679), (112, 184388), (124, 166544), (217, 95168), (224, 92194), (248, 83272), (434, 47584), (448, 46097), (496, 41636), (868, 23792), (992, 20818), (1487, 13888), (1736, 11896), (1984, 10409), (2974, 6944), (3472, 5948)]