20181615525

素因数分解:

$3^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{523}}^1$

素因数の和:716

約数の個数: 144

約数和(自身を含む): 38315047680

約数和(自身を除く): 18133432155

約数列:

[1, 3, 5, 9, 15, 25, 41, 45, 47, 75, 89, 123, 141, 205, 225, 235, 267, 369, 423, 445, 523, 615, 705, 801, 1025, 1175, 1335, 1569, 1845, 1927, 2115, 2225, 2615, 3075, 3525, 3649, 4005, 4183, 4707, 5781, 6675, 7845, 9225, 9635, 10575, 10947, 12549, 13075, 17343, 18245, 20025, 20915, 21443, 23535, 24581, 28905, 32841, 37647, 39225, 46547, 48175, 54735, 62745, 64329, 73743, 86715, 91225, 104575, 107215, 117675, 122905, 139641, 144525, 164205, 171503, 188235, 192987, 221229, 232735, 273675, 313725, 321645, 368715, 418923, 433575, 514509, 536075, 614525, 698205, 821025, 857515, 941175, 964935, 1007821, 1106145, 1163675, 1543527, 1608225, 1843575, 1908427, 2094615, 2187709, 2572545, 3023463, 3491025, 4287575, 4824675, 5039105, 5530725, 5725281, 6563127, 7717635, 9070389, 9542135, 10473075, 10938545, 12862725, 15117315, 17175843, 19689381, 25195525, 28626405, 32815635, 38588175, 45351945, 47710675, 54692725, 75586575, 85879215, 89696069, 98446905, 143132025, 164078175, 226759725, 269088207, 429396075, 448480345, 492234525, 807264621, 1345441035, 2242401725, 4036323105, 6727205175, 20181615525]

約数ペア:

[(1, 20181615525), (3, 6727205175), (5, 4036323105), (9, 2242401725), (15, 1345441035), (25, 807264621), (41, 492234525), (45, 448480345), (47, 429396075), (75, 269088207), (89, 226759725), (123, 164078175), (141, 143132025), (205, 98446905), (225, 89696069), (235, 85879215), (267, 75586575), (369, 54692725), (423, 47710675), (445, 45351945), (523, 38588175), (615, 32815635), (705, 28626405), (801, 25195525), (1025, 19689381), (1175, 17175843), (1335, 15117315), (1569, 12862725), (1845, 10938545), (1927, 10473075), (2115, 9542135), (2225, 9070389), (2615, 7717635), (3075, 6563127), (3525, 5725281), (3649, 5530725), (4005, 5039105), (4183, 4824675), (4707, 4287575), (5781, 3491025), (6675, 3023463), (7845, 2572545), (9225, 2187709), (9635, 2094615), (10575, 1908427), (10947, 1843575), (12549, 1608225), (13075, 1543527), (17343, 1163675), (18245, 1106145), (20025, 1007821), (20915, 964935), (21443, 941175), (23535, 857515), (24581, 821025), (28905, 698205), (32841, 614525), (37647, 536075), (39225, 514509), (46547, 433575), (48175, 418923), (54735, 368715), (62745, 321645), (64329, 313725), (73743, 273675), (86715, 232735), (91225, 221229), (104575, 192987), (107215, 188235), (117675, 171503), (122905, 164205), (139641, 144525)]