217435515

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{15877}}^1$

素因数の和:15979

約数の個数: 32

約数和(自身を含む): 384120576

約数和(自身を除く): 166685061

約数列:

[1, 3, 5, 11, 15, 33, 55, 83, 165, 249, 415, 913, 1245, 2739, 4565, 13695, 15877, 47631, 79385, 174647, 238155, 523941, 873235, 1317791, 2619705, 3953373, 6588955, 14495701, 19766865, 43487103, 72478505, 217435515]

約数ペア:

[(1, 217435515), (3, 72478505), (5, 43487103), (11, 19766865), (15, 14495701), (33, 6588955), (55, 3953373), (83, 2619705), (165, 1317791), (249, 873235), (415, 523941), (913, 238155), (1245, 174647), (2739, 79385), (4565, 47631), (13695, 15877)]