20800920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{24763}}^1$

素因数の和:24784

約数の個数: 64

約数和(自身を含む): 71320320

約数和(自身を除く): 50519400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 24763, 49526, 74289, 99052, 123815, 148578, 173341, 198104, 247630, 297156, 346682, 371445, 495260, 520023, 594312, 693364, 742890, 866705, 990520, 1040046, 1386728, 1485780, 1733410, 2080092, 2600115, 2971560, 3466820, 4160184, 5200230, 6933640, 10400460, 20800920]

約数ペア:

[(1, 20800920), (2, 10400460), (3, 6933640), (4, 5200230), (5, 4160184), (6, 3466820), (7, 2971560), (8, 2600115), (10, 2080092), (12, 1733410), (14, 1485780), (15, 1386728), (20, 1040046), (21, 990520), (24, 866705), (28, 742890), (30, 693364), (35, 594312), (40, 520023), (42, 495260), (56, 371445), (60, 346682), (70, 297156), (84, 247630), (105, 198104), (120, 173341), (140, 148578), (168, 123815), (210, 99052), (280, 74289), (420, 49526), (840, 24763)]