20514240

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{419}}^1$

素因数の和:459

約数の個数: 168

約数和(自身を含む): 74889360

約数和(自身を除く): 54375120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 32, 34, 36, 40, 45, 48, 51, 60, 64, 68, 72, 80, 85, 90, 96, 102, 120, 136, 144, 153, 160, 170, 180, 192, 204, 240, 255, 272, 288, 306, 320, 340, 360, 408, 419, 480, 510, 544, 576, 612, 680, 720, 765, 816, 838, 960, 1020, 1088, 1224, 1257, 1360, 1440, 1530, 1632, 1676, 2040, 2095, 2448, 2514, 2720, 2880, 3060, 3264, 3352, 3771, 4080, 4190, 4896, 5028, 5440, 6120, 6285, 6704, 7123, 7542, 8160, 8380, 9792, 10056, 12240, 12570, 13408, 14246, 15084, 16320, 16760, 18855, 20112, 21369, 24480, 25140, 26816, 28492, 30168, 33520, 35615, 37710, 40224, 42738, 48960, 50280, 56984, 60336, 64107, 67040, 71230, 75420, 80448, 85476, 100560, 106845, 113968, 120672, 128214, 134080, 142460, 150840, 170952, 201120, 213690, 227936, 241344, 256428, 284920, 301680, 320535, 341904, 402240, 427380, 455872, 512856, 569840, 603360, 641070, 683808, 854760, 1025712, 1139680, 1206720, 1282140, 1367616, 1709520, 2051424, 2279360, 2564280, 3419040, 4102848, 5128560, 6838080, 10257120, 20514240]

約数ペア:

[(1, 20514240), (2, 10257120), (3, 6838080), (4, 5128560), (5, 4102848), (6, 3419040), (8, 2564280), (9, 2279360), (10, 2051424), (12, 1709520), (15, 1367616), (16, 1282140), (17, 1206720), (18, 1139680), (20, 1025712), (24, 854760), (30, 683808), (32, 641070), (34, 603360), (36, 569840), (40, 512856), (45, 455872), (48, 427380), (51, 402240), (60, 341904), (64, 320535), (68, 301680), (72, 284920), (80, 256428), (85, 241344), (90, 227936), (96, 213690), (102, 201120), (120, 170952), (136, 150840), (144, 142460), (153, 134080), (160, 128214), (170, 120672), (180, 113968), (192, 106845), (204, 100560), (240, 85476), (255, 80448), (272, 75420), (288, 71230), (306, 67040), (320, 64107), (340, 60336), (360, 56984), (408, 50280), (419, 48960), (480, 42738), (510, 40224), (544, 37710), (576, 35615), (612, 33520), (680, 30168), (720, 28492), (765, 26816), (816, 25140), (838, 24480), (960, 21369), (1020, 20112), (1088, 18855), (1224, 16760), (1257, 16320), (1360, 15084), (1440, 14246), (1530, 13408), (1632, 12570), (1676, 12240), (2040, 10056), (2095, 9792), (2448, 8380), (2514, 8160), (2720, 7542), (2880, 7123), (3060, 6704), (3264, 6285), (3352, 6120), (3771, 5440), (4080, 5028), (4190, 4896)]