21680344

素因数分解:

$2^3\times 7^3\times {\mathrm{7901}}^1$

素因数の和:7928

約数の個数: 32

約数和(自身を含む): 47412000

約数和(自身を除く): 25731656

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 343, 392, 686, 1372, 2744, 7901, 15802, 31604, 55307, 63208, 110614, 221228, 387149, 442456, 774298, 1548596, 2710043, 3097192, 5420086, 10840172, 21680344]

約数ペア:

[(1, 21680344), (2, 10840172), (4, 5420086), (7, 3097192), (8, 2710043), (14, 1548596), (28, 774298), (49, 442456), (56, 387149), (98, 221228), (196, 110614), (343, 63208), (392, 55307), (686, 31604), (1372, 15802), (2744, 7901)]