21953925

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{263}}^1$

素因数の和:339

約数の個数: 72

約数和(自身を含む): 45961344

約数和(自身を除く): 24007419

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 53, 63, 75, 105, 159, 175, 225, 263, 265, 315, 371, 477, 525, 789, 795, 1113, 1315, 1325, 1575, 1841, 1855, 2367, 2385, 3339, 3945, 3975, 5523, 5565, 6575, 9205, 9275, 11835, 11925, 13939, 16569, 16695, 19725, 27615, 27825, 41817, 46025, 59175, 69695, 82845, 83475, 97573, 125451, 138075, 209085, 292719, 348475, 414225, 487865, 627255, 878157, 1045425, 1463595, 2439325, 3136275, 4390785, 7317975, 21953925]

約数ペア:

[(1, 21953925), (3, 7317975), (5, 4390785), (7, 3136275), (9, 2439325), (15, 1463595), (21, 1045425), (25, 878157), (35, 627255), (45, 487865), (53, 414225), (63, 348475), (75, 292719), (105, 209085), (159, 138075), (175, 125451), (225, 97573), (263, 83475), (265, 82845), (315, 69695), (371, 59175), (477, 46025), (525, 41817), (789, 27825), (795, 27615), (1113, 19725), (1315, 16695), (1325, 16569), (1575, 13939), (1841, 11925), (1855, 11835), (2367, 9275), (2385, 9205), (3339, 6575), (3945, 5565), (3975, 5523)]