21275758

素因数分解:

$2^1\times 7^1\times {\mathrm{787}}^1\times {\mathrm{1931}}^1$

素因数の和:2727

約数の個数: 16

約数和(自身を含む): 36537984

約数和(自身を除く): 15262226

約数列:

[1, 2, 7, 14, 787, 1574, 1931, 3862, 5509, 11018, 13517, 27034, 1519697, 3039394, 10637879, 21275758]

約数ペア:

[(1, 21275758), (2, 10637879), (7, 3039394), (14, 1519697), (787, 27034), (1574, 13517), (1931, 11018), (3862, 5509)]