18935818

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{509}}^1$

素因数の和:630

約数の個数: 32

約数和(自身を含む): 33048000

約数和(自身を除く): 14112182

約数列:

[1, 2, 11, 19, 22, 38, 89, 178, 209, 418, 509, 979, 1018, 1691, 1958, 3382, 5599, 9671, 11198, 18601, 19342, 37202, 45301, 90602, 106381, 212762, 498311, 860719, 996622, 1721438, 9467909, 18935818]

約数ペア:

[(1, 18935818), (2, 9467909), (11, 1721438), (19, 996622), (22, 860719), (38, 498311), (89, 212762), (178, 106381), (209, 90602), (418, 45301), (509, 37202), (979, 19342), (1018, 18601), (1691, 11198), (1958, 9671), (3382, 5599)]