21170985

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{4139}}^1$

素因数の和:4189

約数の個数: 32

約数和(自身を含む): 38154240

約数和(自身を除く): 16983255

約数列:

[1, 3, 5, 11, 15, 31, 33, 55, 93, 155, 165, 341, 465, 1023, 1705, 4139, 5115, 12417, 20695, 45529, 62085, 128309, 136587, 227645, 384927, 641545, 682935, 1411399, 1924635, 4234197, 7056995, 21170985]

約数ペア:

[(1, 21170985), (3, 7056995), (5, 4234197), (11, 1924635), (15, 1411399), (31, 682935), (33, 641545), (55, 384927), (93, 227645), (155, 136587), (165, 128309), (341, 62085), (465, 45529), (1023, 20695), (1705, 12417), (4139, 5115)]