21641728

素因数分解:

$2^9\times {\mathrm{43}}^1\times {\mathrm{983}}^1$

素因数の和:1044

約数の個数: 40

約数和(自身を含む): 44291808

約数和(自身を除く): 22650080

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 128, 172, 256, 344, 512, 688, 983, 1376, 1966, 2752, 3932, 5504, 7864, 11008, 15728, 22016, 31456, 42269, 62912, 84538, 125824, 169076, 251648, 338152, 503296, 676304, 1352608, 2705216, 5410432, 10820864, 21641728]

約数ペア:

[(1, 21641728), (2, 10820864), (4, 5410432), (8, 2705216), (16, 1352608), (32, 676304), (43, 503296), (64, 338152), (86, 251648), (128, 169076), (172, 125824), (256, 84538), (344, 62912), (512, 42269), (688, 31456), (983, 22016), (1376, 15728), (1966, 11008), (2752, 7864), (3932, 5504)]