28806075

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^2\times {\mathrm{443}}^1$

素因数の和:493

約数の個数: 54

約数和(自身を含む): 54932124

約数和(自身を除く): 26126049

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 153, 225, 255, 289, 425, 443, 765, 867, 1275, 1329, 1445, 2215, 2601, 3825, 3987, 4335, 6645, 7225, 7531, 11075, 13005, 19935, 21675, 22593, 33225, 37655, 65025, 67779, 99675, 112965, 128027, 188275, 338895, 384081, 564825, 640135, 1152243, 1694475, 1920405, 3200675, 5761215, 9602025, 28806075]

約数ペア:

[(1, 28806075), (3, 9602025), (5, 5761215), (9, 3200675), (15, 1920405), (17, 1694475), (25, 1152243), (45, 640135), (51, 564825), (75, 384081), (85, 338895), (153, 188275), (225, 128027), (255, 112965), (289, 99675), (425, 67779), (443, 65025), (765, 37655), (867, 33225), (1275, 22593), (1329, 21675), (1445, 19935), (2215, 13005), (2601, 11075), (3825, 7531), (3987, 7225), (4335, 6645)]