21418076

素因数分解:

$2^2\times {\mathrm{61}}^2\times {\mathrm{1439}}^1$

素因数の和:1565

約数の個数: 18

約数和(自身を含む): 38132640

約数和(自身を除く): 16714564

約数列:

[1, 2, 4, 61, 122, 244, 1439, 2878, 3721, 5756, 7442, 14884, 87779, 175558, 351116, 5354519, 10709038, 21418076]

約数ペア:

[(1, 21418076), (2, 10709038), (4, 5354519), (61, 351116), (122, 175558), (244, 87779), (1439, 14884), (2878, 7442), (3721, 5756)]