81621855

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{4889}}^1$

素因数の和:4960

約数の個数: 48

約数和(自身を含む): 164773440

約数和(自身を除く): 83151585

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 53, 63, 105, 159, 265, 315, 371, 477, 795, 1113, 1855, 2385, 3339, 4889, 5565, 14667, 16695, 24445, 34223, 44001, 73335, 102669, 171115, 220005, 259117, 308007, 513345, 777351, 1295585, 1540035, 1813819, 2332053, 3886755, 5441457, 9069095, 11660265, 16324371, 27207285, 81621855]

約数ペア:

[(1, 81621855), (3, 27207285), (5, 16324371), (7, 11660265), (9, 9069095), (15, 5441457), (21, 3886755), (35, 2332053), (45, 1813819), (53, 1540035), (63, 1295585), (105, 777351), (159, 513345), (265, 308007), (315, 259117), (371, 220005), (477, 171115), (795, 102669), (1113, 73335), (1855, 44001), (2385, 34223), (3339, 24445), (4889, 16695), (5565, 14667)]