20512957575

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{52567}}^1$

素因数の和:52645

約数の個数: 72

約数和(自身を含む): 38145864064

約数和(自身を除く): 17632906489

約数列:

[1, 3, 5, 11, 15, 25, 33, 43, 55, 75, 121, 129, 165, 215, 275, 363, 473, 605, 645, 825, 1075, 1419, 1815, 2365, 3025, 3225, 5203, 7095, 9075, 11825, 15609, 26015, 35475, 52567, 78045, 130075, 157701, 262835, 390225, 578237, 788505, 1314175, 1734711, 2260381, 2891185, 3942525, 6360607, 6781143, 8673555, 11301905, 14455925, 19081821, 24864191, 31803035, 33905715, 43367775, 56509525, 74592573, 95409105, 124320955, 159015175, 169528575, 273506101, 372962865, 477045525, 621604775, 820518303, 1367530505, 1864814325, 4102591515, 6837652525, 20512957575]

約数ペア:

[(1, 20512957575), (3, 6837652525), (5, 4102591515), (11, 1864814325), (15, 1367530505), (25, 820518303), (33, 621604775), (43, 477045525), (55, 372962865), (75, 273506101), (121, 169528575), (129, 159015175), (165, 124320955), (215, 95409105), (275, 74592573), (363, 56509525), (473, 43367775), (605, 33905715), (645, 31803035), (825, 24864191), (1075, 19081821), (1419, 14455925), (1815, 11301905), (2365, 8673555), (3025, 6781143), (3225, 6360607), (5203, 3942525), (7095, 2891185), (9075, 2260381), (11825, 1734711), (15609, 1314175), (26015, 788505), (35475, 578237), (52567, 390225), (78045, 262835), (130075, 157701)]