19530860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{499}}^1$

素因数の和:630

約数の個数: 48

約数和(自身を含む): 43680000

約数和(自身を除く): 24149140

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 103, 190, 206, 380, 412, 499, 515, 998, 1030, 1957, 1996, 2060, 2495, 3914, 4990, 7828, 9481, 9785, 9980, 18962, 19570, 37924, 39140, 47405, 51397, 94810, 102794, 189620, 205588, 256985, 513970, 976543, 1027940, 1953086, 3906172, 4882715, 9765430, 19530860]

約数ペア:

[(1, 19530860), (2, 9765430), (4, 4882715), (5, 3906172), (10, 1953086), (19, 1027940), (20, 976543), (38, 513970), (76, 256985), (95, 205588), (103, 189620), (190, 102794), (206, 94810), (380, 51397), (412, 47405), (499, 39140), (515, 37924), (998, 19570), (1030, 18962), (1957, 9980), (1996, 9785), (2060, 9481), (2495, 7828), (3914, 4990)]