71345781

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 115577280

約数和(自身を除く): 44231499

約数列:

[1, 3, 9, 13, 39, 41, 107, 117, 123, 139, 321, 369, 417, 533, 963, 1251, 1391, 1599, 1807, 4173, 4387, 4797, 5421, 5699, 12519, 13161, 14873, 16263, 17097, 39483, 44619, 51291, 57031, 74087, 133857, 171093, 193349, 222261, 513279, 580047, 609793, 666783, 1740141, 1829379, 5488137, 7927309, 23781927, 71345781]

約数ペア:

[(1, 71345781), (3, 23781927), (9, 7927309), (13, 5488137), (39, 1829379), (41, 1740141), (107, 666783), (117, 609793), (123, 580047), (139, 513279), (321, 222261), (369, 193349), (417, 171093), (533, 133857), (963, 74087), (1251, 57031), (1391, 51291), (1599, 44619), (1807, 39483), (4173, 17097), (4387, 16263), (4797, 14873), (5421, 13161), (5699, 12519)]