20850900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{9929}}^1$

素因数の和:9953

約数の個数: 72

約数和(自身を含む): 68953920

約数和(自身を除く): 48103020

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 9929, 19858, 29787, 39716, 49645, 59574, 69503, 99290, 119148, 139006, 148935, 198580, 208509, 248225, 278012, 297870, 347515, 417018, 496450, 595740, 695030, 744675, 834036, 992900, 1042545, 1390060, 1489350, 1737575, 2085090, 2978700, 3475150, 4170180, 5212725, 6950300, 10425450, 20850900]

約数ペア:

[(1, 20850900), (2, 10425450), (3, 6950300), (4, 5212725), (5, 4170180), (6, 3475150), (7, 2978700), (10, 2085090), (12, 1737575), (14, 1489350), (15, 1390060), (20, 1042545), (21, 992900), (25, 834036), (28, 744675), (30, 695030), (35, 595740), (42, 496450), (50, 417018), (60, 347515), (70, 297870), (75, 278012), (84, 248225), (100, 208509), (105, 198580), (140, 148935), (150, 139006), (175, 119148), (210, 99290), (300, 69503), (350, 59574), (420, 49645), (525, 39716), (700, 29787), (1050, 19858), (2100, 9929)]