19907968

素因数分解:

$2^7\times {\mathrm{43}}^1\times {\mathrm{3617}}^1$

素因数の和:3674

約数の個数: 32

約数和(自身を含む): 40593960

約数和(自身を除く): 20685992

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 128, 172, 344, 688, 1376, 2752, 3617, 5504, 7234, 14468, 28936, 57872, 115744, 155531, 231488, 311062, 462976, 622124, 1244248, 2488496, 4976992, 9953984, 19907968]

約数ペア:

[(1, 19907968), (2, 9953984), (4, 4976992), (8, 2488496), (16, 1244248), (32, 622124), (43, 462976), (64, 311062), (86, 231488), (128, 155531), (172, 115744), (344, 57872), (688, 28936), (1376, 14468), (2752, 7234), (3617, 5504)]