21687699

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{577}}^1$

素因数の和:675

約数の個数: 32

約数和(自身を含む): 33958656

約数和(自身を除く): 12270957

約数列:

[1, 3, 11, 17, 33, 51, 67, 187, 201, 561, 577, 737, 1139, 1731, 2211, 3417, 6347, 9809, 12529, 19041, 29427, 37587, 38659, 107899, 115977, 323697, 425249, 657203, 1275747, 1971609, 7229233, 21687699]

約数ペア:

[(1, 21687699), (3, 7229233), (11, 1971609), (17, 1275747), (33, 657203), (51, 425249), (67, 323697), (187, 115977), (201, 107899), (561, 38659), (577, 37587), (737, 29427), (1139, 19041), (1731, 12529), (2211, 9809), (3417, 6347)]