19664750

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{661}}^1$

素因数の和:702

約数の個数: 64

約数和(自身を含む): 44613504

約数和(自身を除く): 24948754

約数列:

[1, 2, 5, 7, 10, 14, 17, 25, 34, 35, 50, 70, 85, 119, 125, 170, 175, 238, 250, 350, 425, 595, 661, 850, 875, 1190, 1322, 1750, 2125, 2975, 3305, 4250, 4627, 5950, 6610, 9254, 11237, 14875, 16525, 22474, 23135, 29750, 33050, 46270, 56185, 78659, 82625, 112370, 115675, 157318, 165250, 231350, 280925, 393295, 561850, 578375, 786590, 1156750, 1404625, 1966475, 2809250, 3932950, 9832375, 19664750]

約数ペア:

[(1, 19664750), (2, 9832375), (5, 3932950), (7, 2809250), (10, 1966475), (14, 1404625), (17, 1156750), (25, 786590), (34, 578375), (35, 561850), (50, 393295), (70, 280925), (85, 231350), (119, 165250), (125, 157318), (170, 115675), (175, 112370), (238, 82625), (250, 78659), (350, 56185), (425, 46270), (595, 33050), (661, 29750), (850, 23135), (875, 22474), (1190, 16525), (1322, 14875), (1750, 11237), (2125, 9254), (2975, 6610), (3305, 5950), (4250, 4627)]