20121749991

素因数分解:

$3^2\times 7^2\times {\mathrm{1607}}^1\times {\mathrm{28393}}^1$

素因数の和:30020

約数の個数: 36

約数和(自身を含む): 33832246032

約数和(自身を除く): 13710496041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 1607, 4821, 11249, 14463, 28393, 33747, 78743, 85179, 101241, 198751, 236229, 255537, 596253, 708687, 1391257, 1788759, 4173771, 12521313, 45627551, 136882653, 319392857, 410647959, 958178571, 2235749999, 2874535713, 6707249997, 20121749991]

約数ペア:

[(1, 20121749991), (3, 6707249997), (7, 2874535713), (9, 2235749999), (21, 958178571), (49, 410647959), (63, 319392857), (147, 136882653), (441, 45627551), (1607, 12521313), (4821, 4173771), (11249, 1788759), (14463, 1391257), (28393, 708687), (33747, 596253), (78743, 255537), (85179, 236229), (101241, 198751)]