31361320

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{12853}}^1$

素因数の和:12925

約数の個数: 32

約数和(自身を含む): 71725320

約数和(自身を除く): 40364000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 12853, 25706, 51412, 64265, 102824, 128530, 257060, 514120, 784033, 1568066, 3136132, 3920165, 6272264, 7840330, 15680660, 31361320]

約数ペア:

[(1, 31361320), (2, 15680660), (4, 7840330), (5, 6272264), (8, 3920165), (10, 3136132), (20, 1568066), (40, 784033), (61, 514120), (122, 257060), (244, 128530), (305, 102824), (488, 64265), (610, 51412), (1220, 25706), (2440, 12853)]