18405681

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{719}}^1$

素因数の和:805

約数の個数: 32

約数和(自身を含む): 29859840

約数和(自身を除く): 11454159

約数列:

[1, 3, 7, 21, 23, 53, 69, 159, 161, 371, 483, 719, 1113, 1219, 2157, 3657, 5033, 8533, 15099, 16537, 25599, 38107, 49611, 114321, 115759, 266749, 347277, 800247, 876461, 2629383, 6135227, 18405681]

約数ペア:

[(1, 18405681), (3, 6135227), (7, 2629383), (21, 876461), (23, 800247), (53, 347277), (69, 266749), (159, 115759), (161, 114321), (371, 49611), (483, 38107), (719, 25599), (1113, 16537), (1219, 15099), (2157, 8533), (3657, 5033)]