18551520

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{991}}^1$

素因数の和:1025

約数の個数: 144

約数和(自身を含む): 68245632

約数和(自身を除く): 49694112

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 96, 104, 117, 120, 130, 144, 156, 160, 180, 195, 208, 234, 240, 260, 288, 312, 360, 390, 416, 468, 480, 520, 585, 624, 720, 780, 936, 991, 1040, 1170, 1248, 1440, 1560, 1872, 1982, 2080, 2340, 2973, 3120, 3744, 3964, 4680, 4955, 5946, 6240, 7928, 8919, 9360, 9910, 11892, 12883, 14865, 15856, 17838, 18720, 19820, 23784, 25766, 29730, 31712, 35676, 38649, 39640, 44595, 47568, 51532, 59460, 64415, 71352, 77298, 79280, 89190, 95136, 103064, 115947, 118920, 128830, 142704, 154596, 158560, 178380, 193245, 206128, 231894, 237840, 257660, 285408, 309192, 356760, 386490, 412256, 463788, 475680, 515320, 579735, 618384, 713520, 772980, 927576, 1030640, 1159470, 1236768, 1427040, 1545960, 1855152, 2061280, 2318940, 3091920, 3710304, 4637880, 6183840, 9275760, 18551520]

約数ペア:

[(1, 18551520), (2, 9275760), (3, 6183840), (4, 4637880), (5, 3710304), (6, 3091920), (8, 2318940), (9, 2061280), (10, 1855152), (12, 1545960), (13, 1427040), (15, 1236768), (16, 1159470), (18, 1030640), (20, 927576), (24, 772980), (26, 713520), (30, 618384), (32, 579735), (36, 515320), (39, 475680), (40, 463788), (45, 412256), (48, 386490), (52, 356760), (60, 309192), (65, 285408), (72, 257660), (78, 237840), (80, 231894), (90, 206128), (96, 193245), (104, 178380), (117, 158560), (120, 154596), (130, 142704), (144, 128830), (156, 118920), (160, 115947), (180, 103064), (195, 95136), (208, 89190), (234, 79280), (240, 77298), (260, 71352), (288, 64415), (312, 59460), (360, 51532), (390, 47568), (416, 44595), (468, 39640), (480, 38649), (520, 35676), (585, 31712), (624, 29730), (720, 25766), (780, 23784), (936, 19820), (991, 18720), (1040, 17838), (1170, 15856), (1248, 14865), (1440, 12883), (1560, 11892), (1872, 9910), (1982, 9360), (2080, 8919), (2340, 7928), (2973, 6240), (3120, 5946), (3744, 4955), (3964, 4680)]