18435638

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:392

約数の個数: 32

約数和(自身を含む): 31207680

約数和(自身を除く): 12772042

約数列:

[1, 2, 13, 26, 31, 62, 89, 178, 257, 403, 514, 806, 1157, 2314, 2759, 3341, 5518, 6682, 7967, 15934, 22873, 35867, 45746, 71734, 103571, 207142, 297349, 594698, 709063, 1418126, 9217819, 18435638]

約数ペア:

[(1, 18435638), (2, 9217819), (13, 1418126), (26, 709063), (31, 594698), (62, 297349), (89, 207142), (178, 103571), (257, 71734), (403, 45746), (514, 35867), (806, 22873), (1157, 15934), (2314, 7967), (2759, 6682), (3341, 5518)]