211647560

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{15161}}^1$

素因数の和:15521

約数の個数: 32

約数和(自身を含む): 477603000

約数和(自身を除く): 265955440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1745, 2792, 3490, 6980, 13960, 15161, 30322, 60644, 75805, 121288, 151610, 303220, 606440, 5291189, 10582378, 21164756, 26455945, 42329512, 52911890, 105823780, 211647560]

約数ペア:

[(1, 211647560), (2, 105823780), (4, 52911890), (5, 42329512), (8, 26455945), (10, 21164756), (20, 10582378), (40, 5291189), (349, 606440), (698, 303220), (1396, 151610), (1745, 121288), (2792, 75805), (3490, 60644), (6980, 30322), (13960, 15161)]