21289472

素因数分解:

$2^9\times {\mathrm{43}}^1\times {\mathrm{967}}^1$

素因数の和:1028

約数の個数: 40

約数和(自身を含む): 43571616

約数和(自身を除く): 22282144

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 128, 172, 256, 344, 512, 688, 967, 1376, 1934, 2752, 3868, 5504, 7736, 11008, 15472, 22016, 30944, 41581, 61888, 83162, 123776, 166324, 247552, 332648, 495104, 665296, 1330592, 2661184, 5322368, 10644736, 21289472]

約数ペア:

[(1, 21289472), (2, 10644736), (4, 5322368), (8, 2661184), (16, 1330592), (32, 665296), (43, 495104), (64, 332648), (86, 247552), (128, 166324), (172, 123776), (256, 83162), (344, 61888), (512, 41581), (688, 30944), (967, 22016), (1376, 15472), (1934, 11008), (2752, 7736), (3868, 5504)]