21788704

素因数分解:

$2^5\times 7^1\times {\mathrm{211}}^1\times {\mathrm{461}}^1$

素因数の和:689

約数の個数: 48

約数和(自身を含む): 49363776

約数和(自身を除く): 27575072

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 211, 224, 422, 461, 844, 922, 1477, 1688, 1844, 2954, 3227, 3376, 3688, 5908, 6454, 6752, 7376, 11816, 12908, 14752, 23632, 25816, 47264, 51632, 97271, 103264, 194542, 389084, 680897, 778168, 1361794, 1556336, 2723588, 3112672, 5447176, 10894352, 21788704]

約数ペア:

[(1, 21788704), (2, 10894352), (4, 5447176), (7, 3112672), (8, 2723588), (14, 1556336), (16, 1361794), (28, 778168), (32, 680897), (56, 389084), (112, 194542), (211, 103264), (224, 97271), (422, 51632), (461, 47264), (844, 25816), (922, 23632), (1477, 14752), (1688, 12908), (1844, 11816), (2954, 7376), (3227, 6752), (3376, 6454), (3688, 5908)]