21681338

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{49957}}^1$

素因数の和:49997

約数の個数: 16

約数和(自身を含む): 38367744

約数和(自身を除く): 16686406

約数列:

[1, 2, 7, 14, 31, 62, 217, 434, 49957, 99914, 349699, 699398, 1548667, 3097334, 10840669, 21681338]

約数ペア:

[(1, 21681338), (2, 10840669), (7, 3097334), (14, 1548667), (31, 699398), (62, 349699), (217, 99914), (434, 49957)]