217910331

素因数分解:

$3^4\times {\mathrm{67}}^1\times {\mathrm{40153}}^1$

素因数の和:40232

約数の個数: 20

約数和(自身を含む): 330387112

約数和(自身を除く): 112476781

約数列:

[1, 3, 9, 27, 67, 81, 201, 603, 1809, 5427, 40153, 120459, 361377, 1084131, 2690251, 3252393, 8070753, 24212259, 72636777, 217910331]

約数ペア:

[(1, 217910331), (3, 72636777), (9, 24212259), (27, 8070753), (67, 3252393), (81, 2690251), (201, 1084131), (603, 361377), (1809, 120459), (5427, 40153)]