20802180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49529}}^1$

素因数の和:49548

約数の個数: 48

約数和(自身を含む): 66568320

約数和(自身を除く): 45766140

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, 49529, 99058, 148587, 198116, 247645, 297174, 346703, 495290, 594348, 693406, 742935, 990580, 1040109, 1386812, 1485870, 1733515, 2080218, 2971740, 3467030, 4160436, 5200545, 6934060, 10401090, 20802180]

約数ペア:

[(1, 20802180), (2, 10401090), (3, 6934060), (4, 5200545), (5, 4160436), (6, 3467030), (7, 2971740), (10, 2080218), (12, 1733515), (14, 1485870), (15, 1386812), (20, 1040109), (21, 990580), (28, 742935), (30, 693406), (35, 594348), (42, 495290), (60, 346703), (70, 297174), (84, 247645), (105, 198116), (140, 148587), (210, 99058), (420, 49529)]