21253376

素因数分解:

$2^8\times {\mathrm{61}}^1\times {\mathrm{1361}}^1$

素因数の和:1438

約数の個数: 36

約数和(自身を含む): 43150884

約数和(自身を除く): 21897508

約数列:

[1, 2, 4, 8, 16, 32, 61, 64, 122, 128, 244, 256, 488, 976, 1361, 1952, 2722, 3904, 5444, 7808, 10888, 15616, 21776, 43552, 83021, 87104, 166042, 174208, 332084, 348416, 664168, 1328336, 2656672, 5313344, 10626688, 21253376]

約数ペア:

[(1, 21253376), (2, 10626688), (4, 5313344), (8, 2656672), (16, 1328336), (32, 664168), (61, 348416), (64, 332084), (122, 174208), (128, 166042), (244, 87104), (256, 83021), (488, 43552), (976, 21776), (1361, 15616), (1952, 10888), (2722, 7808), (3904, 5444)]