21140295

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{4133}}^1$

素因数の和:4183

約数の個数: 32

約数和(自身を含む): 38098944

約数和(自身を除く): 16958649

約数列:

[1, 3, 5, 11, 15, 31, 33, 55, 93, 155, 165, 341, 465, 1023, 1705, 4133, 5115, 12399, 20665, 45463, 61995, 128123, 136389, 227315, 384369, 640615, 681945, 1409353, 1921845, 4228059, 7046765, 21140295]

約数ペア:

[(1, 21140295), (3, 7046765), (5, 4228059), (11, 1921845), (15, 1409353), (31, 681945), (33, 640615), (55, 384369), (93, 227315), (155, 136389), (165, 128123), (341, 61995), (465, 45463), (1023, 20665), (1705, 12399), (4133, 5115)]