20913394

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1$

素因数の和:274

約数の個数: 32

約数和(自身を含む): 34151040

約数和(自身を除く): 13237646

約数列:

[1, 2, 23, 43, 46, 86, 97, 109, 194, 218, 989, 1978, 2231, 2507, 4171, 4462, 4687, 5014, 8342, 9374, 10573, 21146, 95933, 107801, 191866, 215602, 243179, 454639, 486358, 909278, 10456697, 20913394]

約数ペア:

[(1, 20913394), (2, 10456697), (23, 909278), (43, 486358), (46, 454639), (86, 243179), (97, 215602), (109, 191866), (194, 107801), (218, 95933), (989, 21146), (1978, 10573), (2231, 9374), (2507, 8342), (4171, 5014), (4462, 4687)]