51217515

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1$

素因数の和:250

約数の個数: 80

約数和(自身を含む): 100048608

約数和(自身を除く): 48831093

約数列:

[1, 3, 5, 9, 15, 17, 27, 43, 45, 51, 81, 85, 129, 135, 153, 173, 215, 255, 387, 405, 459, 519, 645, 731, 765, 865, 1161, 1377, 1557, 1935, 2193, 2295, 2595, 2941, 3483, 3655, 4671, 5805, 6579, 6885, 7439, 7785, 8823, 10965, 14013, 14705, 17415, 19737, 22317, 23355, 26469, 32895, 37195, 44115, 59211, 66951, 70065, 79407, 98685, 111585, 126463, 132345, 200853, 238221, 296055, 334755, 379389, 397035, 602559, 632315, 1004265, 1138167, 1191105, 1896945, 3012795, 3414501, 5690835, 10243503, 17072505, 51217515]

約数ペア:

[(1, 51217515), (3, 17072505), (5, 10243503), (9, 5690835), (15, 3414501), (17, 3012795), (27, 1896945), (43, 1191105), (45, 1138167), (51, 1004265), (81, 632315), (85, 602559), (129, 397035), (135, 379389), (153, 334755), (173, 296055), (215, 238221), (255, 200853), (387, 132345), (405, 126463), (459, 111585), (519, 98685), (645, 79407), (731, 70065), (765, 66951), (865, 59211), (1161, 44115), (1377, 37195), (1557, 32895), (1935, 26469), (2193, 23355), (2295, 22317), (2595, 19737), (2941, 17415), (3483, 14705), (3655, 14013), (4671, 10965), (5805, 8823), (6579, 7785), (6885, 7439)]