217380591

素因数分解:

$3^4\times {\mathrm{389}}^1\times {\mathrm{6899}}^1$

素因数の和:7300

約数の個数: 20

約数和(自身を含む): 325611000

約数和(自身を除く): 108230409

約数列:

[1, 3, 9, 27, 81, 389, 1167, 3501, 6899, 10503, 20697, 31509, 62091, 186273, 558819, 2683711, 8051133, 24153399, 72460197, 217380591]

約数ペア:

[(1, 217380591), (3, 72460197), (9, 24153399), (27, 8051133), (81, 2683711), (389, 558819), (1167, 186273), (3501, 62091), (6899, 31509), (10503, 20697)]