128260979

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 170989056

約数和(自身を除く): 42728077

約数列:

[1, 7, 11, 47, 49, 61, 77, 83, 329, 427, 517, 539, 581, 671, 913, 2303, 2867, 2989, 3619, 3901, 4067, 4697, 5063, 6391, 20069, 25333, 27307, 31537, 32879, 35441, 42911, 44737, 55693, 140483, 191149, 220759, 237961, 248087, 300377, 389851, 1545313, 1665727, 2102639, 2617571, 2728957, 11660089, 18322997, 128260979]

約数ペア:

[(1, 128260979), (7, 18322997), (11, 11660089), (47, 2728957), (49, 2617571), (61, 2102639), (77, 1665727), (83, 1545313), (329, 389851), (427, 300377), (517, 248087), (539, 237961), (581, 220759), (671, 191149), (913, 140483), (2303, 55693), (2867, 44737), (2989, 42911), (3619, 35441), (3901, 32879), (4067, 31537), (4697, 27307), (5063, 25333), (6391, 20069)]