20472900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{9749}}^1$

素因数の和:9773

約数の個数: 72

約数和(自身を含む): 67704000

約数和(自身を除く): 47231100

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, 9749, 19498, 29247, 38996, 48745, 58494, 68243, 97490, 116988, 136486, 146235, 194980, 204729, 243725, 272972, 292470, 341215, 409458, 487450, 584940, 682430, 731175, 818916, 974900, 1023645, 1364860, 1462350, 1706075, 2047290, 2924700, 3412150, 4094580, 5118225, 6824300, 10236450, 20472900]

約数ペア:

[(1, 20472900), (2, 10236450), (3, 6824300), (4, 5118225), (5, 4094580), (6, 3412150), (7, 2924700), (10, 2047290), (12, 1706075), (14, 1462350), (15, 1364860), (20, 1023645), (21, 974900), (25, 818916), (28, 731175), (30, 682430), (35, 584940), (42, 487450), (50, 409458), (60, 341215), (70, 292470), (75, 272972), (84, 243725), (100, 204729), (105, 194980), (140, 146235), (150, 136486), (175, 116988), (210, 97490), (300, 68243), (350, 58494), (420, 48745), (525, 38996), (700, 29247), (1050, 19498), (2100, 9749)]