20484800

素因数分解:

$2^6\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:119

約数の個数: 168

約数和(自身を含む): 60472320

約数和(自身を除く): 39987520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 31, 32, 35, 40, 50, 56, 59, 62, 64, 70, 80, 100, 112, 118, 124, 140, 155, 160, 175, 200, 217, 224, 236, 248, 280, 295, 310, 320, 350, 400, 413, 434, 448, 472, 496, 560, 590, 620, 700, 775, 800, 826, 868, 944, 992, 1085, 1120, 1180, 1240, 1400, 1475, 1550, 1600, 1652, 1736, 1829, 1888, 1984, 2065, 2170, 2240, 2360, 2480, 2800, 2950, 3100, 3304, 3472, 3658, 3776, 4130, 4340, 4720, 4960, 5425, 5600, 5900, 6200, 6608, 6944, 7316, 8260, 8680, 9145, 9440, 9920, 10325, 10850, 11200, 11800, 12400, 12803, 13216, 13888, 14632, 16520, 17360, 18290, 18880, 20650, 21700, 23600, 24800, 25606, 26432, 29264, 33040, 34720, 36580, 41300, 43400, 45725, 47200, 49600, 51212, 58528, 64015, 66080, 69440, 73160, 82600, 86800, 91450, 94400, 102424, 117056, 128030, 132160, 146320, 165200, 173600, 182900, 204848, 256060, 292640, 320075, 330400, 347200, 365800, 409696, 512120, 585280, 640150, 660800, 731600, 819392, 1024240, 1280300, 1463200, 2048480, 2560600, 2926400, 4096960, 5121200, 10242400, 20484800]

約数ペア:

[(1, 20484800), (2, 10242400), (4, 5121200), (5, 4096960), (7, 2926400), (8, 2560600), (10, 2048480), (14, 1463200), (16, 1280300), (20, 1024240), (25, 819392), (28, 731600), (31, 660800), (32, 640150), (35, 585280), (40, 512120), (50, 409696), (56, 365800), (59, 347200), (62, 330400), (64, 320075), (70, 292640), (80, 256060), (100, 204848), (112, 182900), (118, 173600), (124, 165200), (140, 146320), (155, 132160), (160, 128030), (175, 117056), (200, 102424), (217, 94400), (224, 91450), (236, 86800), (248, 82600), (280, 73160), (295, 69440), (310, 66080), (320, 64015), (350, 58528), (400, 51212), (413, 49600), (434, 47200), (448, 45725), (472, 43400), (496, 41300), (560, 36580), (590, 34720), (620, 33040), (700, 29264), (775, 26432), (800, 25606), (826, 24800), (868, 23600), (944, 21700), (992, 20650), (1085, 18880), (1120, 18290), (1180, 17360), (1240, 16520), (1400, 14632), (1475, 13888), (1550, 13216), (1600, 12803), (1652, 12400), (1736, 11800), (1829, 11200), (1888, 10850), (1984, 10325), (2065, 9920), (2170, 9440), (2240, 9145), (2360, 8680), (2480, 8260), (2800, 7316), (2950, 6944), (3100, 6608), (3304, 6200), (3472, 5900), (3658, 5600), (3776, 5425), (4130, 4960), (4340, 4720)]