18660015

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{149}}^1$

素因数の和:205

約数の個数: 72

約数和(自身を含む): 37346400

約数和(自身を除く): 18686385

約数列:

[1, 3, 5, 9, 11, 15, 23, 33, 45, 55, 69, 99, 115, 121, 149, 165, 207, 253, 345, 363, 447, 495, 605, 745, 759, 1035, 1089, 1265, 1341, 1639, 1815, 2235, 2277, 2783, 3427, 3795, 4917, 5445, 6705, 8195, 8349, 10281, 11385, 13915, 14751, 17135, 18029, 24585, 25047, 30843, 37697, 41745, 51405, 54087, 73755, 90145, 113091, 125235, 154215, 162261, 188485, 270435, 339273, 414667, 565455, 811305, 1244001, 1696365, 2073335, 3732003, 6220005, 18660015]

約数ペア:

[(1, 18660015), (3, 6220005), (5, 3732003), (9, 2073335), (11, 1696365), (15, 1244001), (23, 811305), (33, 565455), (45, 414667), (55, 339273), (69, 270435), (99, 188485), (115, 162261), (121, 154215), (149, 125235), (165, 113091), (207, 90145), (253, 73755), (345, 54087), (363, 51405), (447, 41745), (495, 37697), (605, 30843), (745, 25047), (759, 24585), (1035, 18029), (1089, 17135), (1265, 14751), (1341, 13915), (1639, 11385), (1815, 10281), (2235, 8349), (2277, 8195), (2783, 6705), (3427, 5445), (3795, 4917)]