21465491905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^3\times {\mathrm{401}}^1\times {\mathrm{443}}^1$

素因数の和:899

約数の個数: 64

約数和(自身を含む): 30585703680

約数和(自身を除く): 9120211775

約数列:

[1, 5, 11, 13, 55, 65, 143, 169, 401, 443, 715, 845, 1859, 2005, 2197, 2215, 4411, 4873, 5213, 5759, 9295, 10985, 22055, 24167, 24365, 26065, 28795, 57343, 63349, 67769, 74867, 120835, 177643, 286715, 316745, 338845, 374335, 745459, 823537, 880997, 888215, 973271, 1954073, 2309359, 3727295, 4117685, 4404985, 4866355, 9690967, 9770365, 10705981, 11546795, 25402949, 30021667, 48454835, 53529905, 127014745, 150108335, 330238337, 390281671, 1651191685, 1951408355, 4293098381, 21465491905]

約数ペア:

[(1, 21465491905), (5, 4293098381), (11, 1951408355), (13, 1651191685), (55, 390281671), (65, 330238337), (143, 150108335), (169, 127014745), (401, 53529905), (443, 48454835), (715, 30021667), (845, 25402949), (1859, 11546795), (2005, 10705981), (2197, 9770365), (2215, 9690967), (4411, 4866355), (4873, 4404985), (5213, 4117685), (5759, 3727295), (9295, 2309359), (10985, 1954073), (22055, 973271), (24167, 888215), (24365, 880997), (26065, 823537), (28795, 745459), (57343, 374335), (63349, 338845), (67769, 316745), (74867, 286715), (120835, 177643)]