20814780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49559}}^1$

素因数の和:49578

約数の個数: 48

約数和(自身を含む): 66608640

約数和(自身を除く): 45793860

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49559, 99118, 148677, 198236, 247795, 297354, 346913, 495590, 594708, 693826, 743385, 991180, 1040739, 1387652, 1486770, 1734565, 2081478, 2973540, 3469130, 4162956, 5203695, 6938260, 10407390, 20814780]

約数ペア:

[(1, 20814780), (2, 10407390), (3, 6938260), (4, 5203695), (5, 4162956), (6, 3469130), (7, 2973540), (10, 2081478), (12, 1734565), (14, 1486770), (15, 1387652), (20, 1040739), (21, 991180), (28, 743385), (30, 693826), (35, 594708), (42, 495590), (60, 346913), (70, 297354), (84, 247795), (105, 198236), (140, 148677), (210, 99118), (420, 49559)]