28663785

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{421}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 53323920

約数和(自身を除く): 24660135

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 89, 153, 255, 267, 421, 445, 765, 801, 1263, 1335, 1513, 2105, 3789, 4005, 4539, 6315, 7157, 7565, 13617, 18945, 21471, 22695, 35785, 37469, 64413, 68085, 107355, 112407, 187345, 322065, 337221, 562035, 636973, 1686105, 1910919, 3184865, 5732757, 9554595, 28663785]

約数ペア:

[(1, 28663785), (3, 9554595), (5, 5732757), (9, 3184865), (15, 1910919), (17, 1686105), (45, 636973), (51, 562035), (85, 337221), (89, 322065), (153, 187345), (255, 112407), (267, 107355), (421, 68085), (445, 64413), (765, 37469), (801, 35785), (1263, 22695), (1335, 21471), (1513, 18945), (2105, 13617), (3789, 7565), (4005, 7157), (4539, 6315)]