217603295

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{25171}}^1$

素因数の和:25215

約数の個数: 32

約数和(自身を含む): 338311680

約数和(自身を除く): 120708385

約数列:

[1, 5, 7, 13, 19, 35, 65, 91, 95, 133, 247, 455, 665, 1235, 1729, 8645, 25171, 125855, 176197, 327223, 478249, 880985, 1636115, 2290561, 2391245, 3347743, 6217237, 11452805, 16738715, 31086185, 43520659, 217603295]

約数ペア:

[(1, 217603295), (5, 43520659), (7, 31086185), (13, 16738715), (19, 11452805), (35, 6217237), (65, 3347743), (91, 2391245), (95, 2290561), (133, 1636115), (247, 880985), (455, 478249), (665, 327223), (1235, 176197), (1729, 125855), (8645, 25171)]