20686672

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{179}}^1\times {\mathrm{233}}^1$

素因数の和:451

約数の個数: 40

約数和(自身を含む): 41783040

約数和(自身を除く): 21096368

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 179, 233, 248, 358, 466, 496, 716, 932, 1432, 1864, 2864, 3728, 5549, 7223, 11098, 14446, 22196, 28892, 41707, 44392, 57784, 83414, 88784, 115568, 166828, 333656, 667312, 1292917, 2585834, 5171668, 10343336, 20686672]

約数ペア:

[(1, 20686672), (2, 10343336), (4, 5171668), (8, 2585834), (16, 1292917), (31, 667312), (62, 333656), (124, 166828), (179, 115568), (233, 88784), (248, 83414), (358, 57784), (466, 44392), (496, 41707), (716, 28892), (932, 22196), (1432, 14446), (1864, 11098), (2864, 7223), (3728, 5549)]