20856705

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{919}}^1$

素因数の和:1033

約数の個数: 32

約数和(自身を含む): 35769600

約数和(自身を除く): 14912895

約数列:

[1, 3, 5, 15, 17, 51, 85, 89, 255, 267, 445, 919, 1335, 1513, 2757, 4539, 4595, 7565, 13785, 15623, 22695, 46869, 78115, 81791, 234345, 245373, 408955, 1226865, 1390447, 4171341, 6952235, 20856705]

約数ペア:

[(1, 20856705), (3, 6952235), (5, 4171341), (15, 1390447), (17, 1226865), (51, 408955), (85, 245373), (89, 234345), (255, 81791), (267, 78115), (445, 46869), (919, 22695), (1335, 15623), (1513, 13785), (2757, 7565), (4539, 4595)]