18780255

素因数分解:

$3^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1$

素因数の和:103

約数の個数: 96

約数和(自身を含む): 38525760

約数和(自身を除く): 19745505

約数列:

[1, 3, 5, 9, 13, 15, 27, 29, 39, 41, 45, 65, 81, 87, 117, 123, 135, 145, 195, 205, 243, 261, 351, 369, 377, 405, 435, 533, 585, 615, 783, 1053, 1107, 1131, 1189, 1215, 1305, 1599, 1755, 1845, 1885, 2349, 2665, 3159, 3321, 3393, 3567, 3915, 4797, 5265, 5535, 5655, 5945, 7047, 7995, 9963, 10179, 10701, 11745, 14391, 15457, 15795, 16605, 16965, 17835, 23985, 30537, 32103, 35235, 43173, 46371, 49815, 50895, 53505, 71955, 77285, 91611, 96309, 129519, 139113, 152685, 160515, 215865, 231855, 288927, 417339, 458055, 481545, 647595, 695565, 1252017, 1444635, 2086695, 3756051, 6260085, 18780255]

約数ペア:

[(1, 18780255), (3, 6260085), (5, 3756051), (9, 2086695), (13, 1444635), (15, 1252017), (27, 695565), (29, 647595), (39, 481545), (41, 458055), (45, 417339), (65, 288927), (81, 231855), (87, 215865), (117, 160515), (123, 152685), (135, 139113), (145, 129519), (195, 96309), (205, 91611), (243, 77285), (261, 71955), (351, 53505), (369, 50895), (377, 49815), (405, 46371), (435, 43173), (533, 35235), (585, 32103), (615, 30537), (783, 23985), (1053, 17835), (1107, 16965), (1131, 16605), (1189, 15795), (1215, 15457), (1305, 14391), (1599, 11745), (1755, 10701), (1845, 10179), (1885, 9963), (2349, 7995), (2665, 7047), (3159, 5945), (3321, 5655), (3393, 5535), (3567, 5265), (3915, 4797)]