20927760

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12457}}^1$

素因数の和:12480

約数の個数: 80

約数和(自身を含む): 74150016

約数和(自身を除く): 53222256

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12457, 24914, 37371, 49828, 62285, 74742, 87199, 99656, 124570, 149484, 174398, 186855, 199312, 249140, 261597, 298968, 348796, 373710, 435995, 498280, 523194, 597936, 697592, 747420, 871990, 996560, 1046388, 1307985, 1395184, 1494840, 1743980, 2092776, 2615970, 2989680, 3487960, 4185552, 5231940, 6975920, 10463880, 20927760]

約数ペア:

[(1, 20927760), (2, 10463880), (3, 6975920), (4, 5231940), (5, 4185552), (6, 3487960), (7, 2989680), (8, 2615970), (10, 2092776), (12, 1743980), (14, 1494840), (15, 1395184), (16, 1307985), (20, 1046388), (21, 996560), (24, 871990), (28, 747420), (30, 697592), (35, 597936), (40, 523194), (42, 498280), (48, 435995), (56, 373710), (60, 348796), (70, 298968), (80, 261597), (84, 249140), (105, 199312), (112, 186855), (120, 174398), (140, 149484), (168, 124570), (210, 99656), (240, 87199), (280, 74742), (336, 62285), (420, 49828), (560, 37371), (840, 24914), (1680, 12457)]