21327796

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12487}}^1$

素因数の和:12559

約数の個数: 24

約数和(自身を含む): 43358336

約数和(自身を除く): 22030540

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12487, 24974, 49948, 87409, 174818, 349636, 761707, 1523414, 3046828, 5331949, 10663898, 21327796]

約数ペア:

[(1, 21327796), (2, 10663898), (4, 5331949), (7, 3046828), (14, 1523414), (28, 761707), (61, 349636), (122, 174818), (244, 87409), (427, 49948), (854, 24974), (1708, 12487)]