20640246

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{13597}}^1$

素因数の和:13636

約数の個数: 32

約数和(自身を含む): 46994688

約数和(自身を除く): 26354442

約数列:

[1, 2, 3, 6, 11, 22, 23, 33, 46, 66, 69, 138, 253, 506, 759, 1518, 13597, 27194, 40791, 81582, 149567, 299134, 312731, 448701, 625462, 897402, 938193, 1876386, 3440041, 6880082, 10320123, 20640246]

約数ペア:

[(1, 20640246), (2, 10320123), (3, 6880082), (6, 3440041), (11, 1876386), (22, 938193), (23, 897402), (33, 625462), (46, 448701), (66, 312731), (69, 299134), (138, 149567), (253, 81582), (506, 40791), (759, 27194), (1518, 13597)]