81720996

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{972869}}^1$

素因数の和:972883

約数の個数: 24

約数和(自身を含む): 217922880

約数和(自身を除く): 136201884

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 972869, 1945738, 2918607, 3891476, 5837214, 6810083, 11674428, 13620166, 20430249, 27240332, 40860498, 81720996]

約数ペア:

[(1, 81720996), (2, 40860498), (3, 27240332), (4, 20430249), (6, 13620166), (7, 11674428), (12, 6810083), (14, 5837214), (21, 3891476), (28, 2918607), (42, 1945738), (84, 972869)]