21236655

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{113}}^1$

素因数の和:216

約数の個数: 64

約数和(自身を含む): 40186368

約数和(自身を除く): 18949713

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 67, 85, 113, 165, 187, 201, 255, 335, 339, 561, 565, 737, 935, 1005, 1139, 1243, 1695, 1921, 2211, 2805, 3417, 3685, 3729, 5695, 5763, 6215, 7571, 9605, 11055, 12529, 17085, 18645, 21131, 22713, 28815, 37587, 37855, 62645, 63393, 83281, 105655, 113565, 128707, 187935, 249843, 316965, 386121, 416405, 643535, 1249215, 1415777, 1930605, 4247331, 7078885, 21236655]

約数ペア:

[(1, 21236655), (3, 7078885), (5, 4247331), (11, 1930605), (15, 1415777), (17, 1249215), (33, 643535), (51, 416405), (55, 386121), (67, 316965), (85, 249843), (113, 187935), (165, 128707), (187, 113565), (201, 105655), (255, 83281), (335, 63393), (339, 62645), (561, 37855), (565, 37587), (737, 28815), (935, 22713), (1005, 21131), (1139, 18645), (1243, 17085), (1695, 12529), (1921, 11055), (2211, 9605), (2805, 7571), (3417, 6215), (3685, 5763), (3729, 5695)]