18985005

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1$

素因数の和:147

約数の個数: 96

約数和(自身を含む): 39626496

約数和(自身を除く): 20641491

約数列:

[1, 3, 5, 9, 13, 15, 17, 23, 39, 45, 51, 65, 69, 83, 85, 115, 117, 153, 195, 207, 221, 249, 255, 299, 345, 391, 415, 585, 663, 747, 765, 897, 1035, 1079, 1105, 1173, 1245, 1411, 1495, 1909, 1955, 1989, 2691, 3237, 3315, 3519, 3735, 4233, 4485, 5083, 5395, 5727, 5865, 7055, 9545, 9711, 9945, 12699, 13455, 15249, 16185, 17181, 17595, 18343, 21165, 24817, 25415, 28635, 32453, 45747, 48555, 55029, 63495, 74451, 76245, 85905, 91715, 97359, 124085, 162265, 165087, 223353, 228735, 275145, 292077, 372255, 421889, 486795, 825435, 1116765, 1265667, 1460385, 2109445, 3797001, 6328335, 18985005]

約数ペア:

[(1, 18985005), (3, 6328335), (5, 3797001), (9, 2109445), (13, 1460385), (15, 1265667), (17, 1116765), (23, 825435), (39, 486795), (45, 421889), (51, 372255), (65, 292077), (69, 275145), (83, 228735), (85, 223353), (115, 165087), (117, 162265), (153, 124085), (195, 97359), (207, 91715), (221, 85905), (249, 76245), (255, 74451), (299, 63495), (345, 55029), (391, 48555), (415, 45747), (585, 32453), (663, 28635), (747, 25415), (765, 24817), (897, 21165), (1035, 18343), (1079, 17595), (1105, 17181), (1173, 16185), (1245, 15249), (1411, 13455), (1495, 12699), (1909, 9945), (1955, 9711), (1989, 9545), (2691, 7055), (3237, 5865), (3315, 5727), (3519, 5395), (3735, 5083), (4233, 4485)]