21387003

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{569}}^1$

素因数の和:667

約数の個数: 32

約数和(自身を含む): 33488640

約数和(自身を除く): 12101637

約数列:

[1, 3, 11, 17, 33, 51, 67, 187, 201, 561, 569, 737, 1139, 1707, 2211, 3417, 6259, 9673, 12529, 18777, 29019, 37587, 38123, 106403, 114369, 319209, 419353, 648091, 1258059, 1944273, 7129001, 21387003]

約数ペア:

[(1, 21387003), (3, 7129001), (11, 1944273), (17, 1258059), (33, 648091), (51, 419353), (67, 319209), (187, 114369), (201, 106403), (561, 38123), (569, 37587), (737, 29019), (1139, 18777), (1707, 12529), (2211, 9673), (3417, 6259)]