51780015

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1021}}^1$

素因数の和:1069

約数の個数: 72

約数和(自身を含む): 109051488

約数和(自身を除く): 57271473

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 35, 45, 49, 63, 69, 105, 115, 147, 161, 207, 245, 315, 345, 441, 483, 735, 805, 1021, 1035, 1127, 1449, 2205, 2415, 3063, 3381, 5105, 5635, 7147, 7245, 9189, 10143, 15315, 16905, 21441, 23483, 35735, 45945, 50029, 50715, 64323, 70449, 107205, 117415, 150087, 164381, 211347, 250145, 321615, 352245, 450261, 493143, 750435, 821905, 1056735, 1150667, 1479429, 2251305, 2465715, 3452001, 5753335, 7397145, 10356003, 17260005, 51780015]

約数ペア:

[(1, 51780015), (3, 17260005), (5, 10356003), (7, 7397145), (9, 5753335), (15, 3452001), (21, 2465715), (23, 2251305), (35, 1479429), (45, 1150667), (49, 1056735), (63, 821905), (69, 750435), (105, 493143), (115, 450261), (147, 352245), (161, 321615), (207, 250145), (245, 211347), (315, 164381), (345, 150087), (441, 117415), (483, 107205), (735, 70449), (805, 64323), (1021, 50715), (1035, 50029), (1127, 45945), (1449, 35735), (2205, 23483), (2415, 21441), (3063, 16905), (3381, 15315), (5105, 10143), (5635, 9189), (7147, 7245)]