661696

素因数分解:

$2^6\times 7^2\times {\mathrm{211}}^1$

素因数の和:237

約数の個数: 42

約数和(自身を含む): 1534668

約数和(自身を除く): 872972

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 196, 211, 224, 392, 422, 448, 784, 844, 1477, 1568, 1688, 2954, 3136, 3376, 5908, 6752, 10339, 11816, 13504, 20678, 23632, 41356, 47264, 82712, 94528, 165424, 330848, 661696]

約数ペア:

[(1, 661696), (2, 330848), (4, 165424), (7, 94528), (8, 82712), (14, 47264), (16, 41356), (28, 23632), (32, 20678), (49, 13504), (56, 11816), (64, 10339), (98, 6752), (112, 5908), (196, 3376), (211, 3136), (224, 2954), (392, 1688), (422, 1568), (448, 1477), (784, 844)]