21528640

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{1373}}^1$

素因数の和:1404

約数の個数: 84

約数和(自身を含む): 59678316

約数和(自身を除く): 38149676

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 320, 392, 448, 490, 560, 784, 980, 1120, 1373, 1568, 1960, 2240, 2746, 3136, 3920, 5492, 6865, 7840, 9611, 10984, 13730, 15680, 19222, 21968, 27460, 38444, 43936, 48055, 54920, 67277, 76888, 87872, 96110, 109840, 134554, 153776, 192220, 219680, 269108, 307552, 336385, 384440, 439360, 538216, 615104, 672770, 768880, 1076432, 1345540, 1537760, 2152864, 2691080, 3075520, 4305728, 5382160, 10764320, 21528640]

約数ペア:

[(1, 21528640), (2, 10764320), (4, 5382160), (5, 4305728), (7, 3075520), (8, 2691080), (10, 2152864), (14, 1537760), (16, 1345540), (20, 1076432), (28, 768880), (32, 672770), (35, 615104), (40, 538216), (49, 439360), (56, 384440), (64, 336385), (70, 307552), (80, 269108), (98, 219680), (112, 192220), (140, 153776), (160, 134554), (196, 109840), (224, 96110), (245, 87872), (280, 76888), (320, 67277), (392, 54920), (448, 48055), (490, 43936), (560, 38444), (784, 27460), (980, 21968), (1120, 19222), (1373, 15680), (1568, 13730), (1960, 10984), (2240, 9611), (2746, 7840), (3136, 6865), (3920, 5492)]