257400495

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{331}}^1\times {\mathrm{1571}}^1$

素因数の和:1924

約数の個数: 48

約数和(自身を含む): 488502144

約数和(自身を除く): 231101649

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 331, 495, 993, 1571, 1655, 2979, 3641, 4713, 4965, 7855, 10923, 14139, 14895, 17281, 18205, 23565, 32769, 51843, 54615, 70695, 86405, 155529, 163845, 259215, 520001, 777645, 1560003, 2600005, 4680009, 5720011, 7800015, 17160033, 23400045, 28600055, 51480099, 85800165, 257400495]

約数ペア:

[(1, 257400495), (3, 85800165), (5, 51480099), (9, 28600055), (11, 23400045), (15, 17160033), (33, 7800015), (45, 5720011), (55, 4680009), (99, 2600005), (165, 1560003), (331, 777645), (495, 520001), (993, 259215), (1571, 163845), (1655, 155529), (2979, 86405), (3641, 70695), (4713, 54615), (4965, 51843), (7855, 32769), (10923, 23565), (14139, 18205), (14895, 17281)]