18709005

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:226

約数の個数: 64

約数和(自身を含む): 36569088

約数和(自身を除く): 17860083

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 61, 69, 105, 115, 127, 161, 183, 305, 345, 381, 427, 483, 635, 805, 889, 915, 1281, 1403, 1905, 2135, 2415, 2667, 2921, 4209, 4445, 6405, 7015, 7747, 8763, 9821, 13335, 14605, 20447, 21045, 23241, 29463, 38735, 43815, 49105, 54229, 61341, 102235, 116205, 147315, 162687, 178181, 271145, 306705, 534543, 813435, 890905, 1247267, 2672715, 3741801, 6236335, 18709005]

約数ペア:

[(1, 18709005), (3, 6236335), (5, 3741801), (7, 2672715), (15, 1247267), (21, 890905), (23, 813435), (35, 534543), (61, 306705), (69, 271145), (105, 178181), (115, 162687), (127, 147315), (161, 116205), (183, 102235), (305, 61341), (345, 54229), (381, 49105), (427, 43815), (483, 38735), (635, 29463), (805, 23241), (889, 21045), (915, 20447), (1281, 14605), (1403, 13335), (1905, 9821), (2135, 8763), (2415, 7747), (2667, 7015), (2921, 6405), (4209, 4445)]