20218219

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:219

約数の個数: 32

約数和(自身を含む): 26127360

約数和(自身を除く): 5909141

約数列:

[1, 7, 17, 23, 83, 89, 119, 161, 391, 581, 623, 1411, 1513, 1909, 2047, 2737, 7387, 9877, 10591, 13363, 14329, 32453, 34799, 51709, 125579, 169901, 227171, 243593, 879053, 1189307, 2888317, 20218219]

約数ペア:

[(1, 20218219), (7, 2888317), (17, 1189307), (23, 879053), (83, 243593), (89, 227171), (119, 169901), (161, 125579), (391, 51709), (581, 34799), (623, 32453), (1411, 14329), (1513, 13363), (1909, 10591), (2047, 9877), (2737, 7387)]