21408128

素因数分解:

$2^7\times 7^1\times {\mathrm{23893}}^1$

素因数の和:23914

約数の個数: 32

約数和(自身を含む): 48743760

約数和(自身を除く): 27335632

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 448, 896, 23893, 47786, 95572, 167251, 191144, 334502, 382288, 669004, 764576, 1338008, 1529152, 2676016, 3058304, 5352032, 10704064, 21408128]

約数ペア:

[(1, 21408128), (2, 10704064), (4, 5352032), (7, 3058304), (8, 2676016), (14, 1529152), (16, 1338008), (28, 764576), (32, 669004), (56, 382288), (64, 334502), (112, 191144), (128, 167251), (224, 95572), (448, 47786), (896, 23893)]