20740440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{24691}}^1$

素因数の和:24712

約数の個数: 64

約数和(自身を含む): 71112960

約数和(自身を除く): 50372520

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, 24691, 49382, 74073, 98764, 123455, 148146, 172837, 197528, 246910, 296292, 345674, 370365, 493820, 518511, 592584, 691348, 740730, 864185, 987640, 1037022, 1382696, 1481460, 1728370, 2074044, 2592555, 2962920, 3456740, 4148088, 5185110, 6913480, 10370220, 20740440]

約数ペア:

[(1, 20740440), (2, 10370220), (3, 6913480), (4, 5185110), (5, 4148088), (6, 3456740), (7, 2962920), (8, 2592555), (10, 2074044), (12, 1728370), (14, 1481460), (15, 1382696), (20, 1037022), (21, 987640), (24, 864185), (28, 740730), (30, 691348), (35, 592584), (40, 518511), (42, 493820), (56, 370365), (60, 345674), (70, 296292), (84, 246910), (105, 197528), (120, 172837), (140, 148146), (168, 123455), (210, 98764), (280, 74073), (420, 49382), (840, 24691)]