19918690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{7873}}^1$

素因数の和:7914

約数の個数: 32

約数和(自身を含む): 40818816

約数和(自身を除く): 20900126

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 230, 253, 506, 1265, 2530, 7873, 15746, 39365, 78730, 86603, 173206, 181079, 362158, 433015, 866030, 905395, 1810790, 1991869, 3983738, 9959345, 19918690]

約数ペア:

[(1, 19918690), (2, 9959345), (5, 3983738), (10, 1991869), (11, 1810790), (22, 905395), (23, 866030), (46, 433015), (55, 362158), (110, 181079), (115, 173206), (230, 86603), (253, 78730), (506, 39365), (1265, 15746), (2530, 7873)]