19543220

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{179}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 42456960

約数和(自身を除く): 22913740

約数列:

[1, 2, 4, 5, 10, 20, 53, 103, 106, 179, 206, 212, 265, 358, 412, 515, 530, 716, 895, 1030, 1060, 1790, 2060, 3580, 5459, 9487, 10918, 18437, 18974, 21836, 27295, 36874, 37948, 47435, 54590, 73748, 92185, 94870, 109180, 184370, 189740, 368740, 977161, 1954322, 3908644, 4885805, 9771610, 19543220]

約数ペア:

[(1, 19543220), (2, 9771610), (4, 4885805), (5, 3908644), (10, 1954322), (20, 977161), (53, 368740), (103, 189740), (106, 184370), (179, 109180), (206, 94870), (212, 92185), (265, 73748), (358, 54590), (412, 47435), (515, 37948), (530, 36874), (716, 27295), (895, 21836), (1030, 18974), (1060, 18437), (1790, 10918), (2060, 9487), (3580, 5459)]