15540777

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 27031680

約数和(自身を除く): 11490903

約数列:

[1, 3, 7, 9, 21, 37, 59, 63, 111, 113, 177, 259, 333, 339, 413, 531, 777, 791, 1017, 1239, 2183, 2331, 2373, 3717, 4181, 6549, 6667, 7119, 12543, 15281, 19647, 20001, 29267, 37629, 45843, 46669, 60003, 87801, 137529, 140007, 246679, 263403, 420021, 740037, 1726753, 2220111, 5180259, 15540777]

約数ペア:

[(1, 15540777), (3, 5180259), (7, 2220111), (9, 1726753), (21, 740037), (37, 420021), (59, 263403), (63, 246679), (111, 140007), (113, 137529), (177, 87801), (259, 60003), (333, 46669), (339, 45843), (413, 37629), (531, 29267), (777, 20001), (791, 19647), (1017, 15281), (1239, 12543), (2183, 7119), (2331, 6667), (2373, 6549), (3717, 4181)]